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[自然百科] 【整理】2009-05-07 永恒的钻石(二)

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[自然百科] 【整理】2009-05-07 永恒的钻石(二)

本帖最后由 dorisever 于 2009-5-18 20:47 编辑

A Diamond Is Forever

 

Diamonds are minerals that are valued for their durability, beauty, and rarity. They form deep in the earth under conditions of extreme heat and pressure, and are brought to the surface of the earth by the forces of volcanism and weathering. Generally, diamonds - and the rocks they’re found in - are very old. Studying diamonds, therefore, can help scientists reconstruct the processes that were central to the formation of the earth itself.

 



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 整理(for reference only)-by Doris

Any suggestion for further polish will be fully appreciated.

 

"The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon everywhere. And yet diamonds are some of the rarest, most beautiful of all substances. What's the link? The link is the extremely rare environmental conditions that take ordinary carbon--coal, for example--and turn it into diamonds. We’re talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to distort the bonding angles of the carbon atoms."

 

Diamonds are not forged in the earth crust, where most other rocks are made. They come from much deeper, from a hundred miles within the earth's interior. And occasionally in bursts of intense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

 

To geologist Larry Taylor at the University of Tennessee, diamonds are a treasure trove, but not because of their beauty.

 

"This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it's understanding the story that's being told by these minerals which is at the key to all understanding of our knowledge of the earth.

 

"We consider ourselves to be geologic detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

 

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. A diamond never grows old. 

 

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world's hardest substance, but four times harder than the next hardest material.

 

Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments “inclusions”.

 

"The inclusion occurs inside the diamond. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained pristine and virginal to this day. And this is the little piece of material that we are looking for."

 

Using high-resolution X-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfide minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds' astonishing secrets.

 

"It’s best we can tell, the inclusions that are inside a diamond date the diamond as being approximately somewhere between two and three billion years old."

 

At three billion years old, diamonds are among the earth's oldest creations. They are time capsules, carrying information and mystery. To Taylor, a diamond's true value is in what it can tell us about the distant past and the inner workings of the planet.

 

普特在线文本比较普特在线听音查字普特在线拼写检查普特文本转音频

本帖最后由 jessicahdc 于 2009-5-7 09:24 编辑



HW

The secret of a diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon is everywhere, and yet diamonds are some of the rarest, most beautiful of our substances. What’s the link? The link is extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angels of the carbon atom.

Diamonds are not forged in the earth crust, where most of the rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally in a burst of tense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the university of Tennessee, diamonds are a treasure trophy, but not because of their beauty.

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can serve geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable. Their internal bond’s so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world-hardest substance, but four times harder than the next hardest material. Like ember encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamonds. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained prestige and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfur minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond, date to diamond, at being approximately somewhere between 2 and 3 billions years old."


At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.
1

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  • dorisever

立即获取| 免费注册领取外教体验课一节
本帖最后由 fgee1988 于 2009-5-7 15:53 编辑

homework




the secret of diamond lies in the carbon bond. carbon is one of the most plentiful substances known to science. we find carbon in plants, animals, and our bodies, carbon everywhere. and yet, diamonds are some of the various, most beautiful @ substances. what's the link? the link is the extremly rare in environmental conditions that take ordinary carbon core, for example, and turn it into diamonds. we are talking about deepinside the earth crust. we have the pressures and temperature sufficient to restore the bonding angles of the carbon atom. diamonds are not forged in the earth crust where most of rocks are made. they come from much deeper, from 100 miles within the earth interior. and occationally, burst some tons of violence, this very treasure walks into the surface, carried by special high speed volcanols. to geologist larry taylor at the university of Tennessee, diamonds are a treasure touve. "This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can serve geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so
stable, their internal bonds so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world-hardest substance, but four times harder than the next hardest material. Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamonds. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained prestige and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfur minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond, date to diamond, at being approximately somewhere between 2 and 3 billions years old."


At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.
1

评分次数

  • dorisever

I shall not fear.
实现无障碍英语沟通
home work


The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to scientists. We find carbon in plants, animals and our bodies, carbon everywhere. And yet diamonds are some of the rares, the most beautiful above all substances. What's the link? The link is extremely rare environmental conditions that take ordinary carbon core for example and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angles of the carbon item.

Diamonds are not forward in the earth's crust where most of the rocks are made.
They come from much deeper. From 100 miles within the earth's interior. And occasionally in bursts of intense violence this very treasure walks to the surface carry by special high speed volcanoes.

To geologist Larry Tailor at the University of TeniSea diamonds are a treasure trophy but not because they are beauty.

This is the only hard samples we have out of the deep intense earth.

The diamonds are telling us something. They are telling us a story. So it is understanding that the story is being told by this diamonds out of the reach of the cator. Our understanding are knowledge of the earth.

We could serve ourselves as the geological detectives. we are trying to recreate the crime after the fact.

We look at the diamonds, we trying to figure out exactly how they are formed, where they are formed, why they are formed.

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy.Most rocks and minerals can be dated because they contain certain radioactive items. As these items decay, they reveal their age. But the diamonds never decay. Their chemistry is so stable their internal bonds so tight nothing inside the diamond changes. A diamond never grows old. Inside the diamond, the bonds between items of carbon are the strongest known. This makes the diamonds not only the world's hardest substances, but 4 times harder than the next hardest material.

Like amber in casing inside, diamond sometimes capture bits of surrounding minerals, geologists call this fregments inclusions. Inclusion occurs inside the diamond, everything around the diamond has change its complete integrity, has changed everything about it, its chemistry, but the look inclusion inside is remain, purest and virginal to this day. And this is a little piece of interior that we are looking for.

Using high resolusion x-ray tomography, a technique similar to a caps gun, Tailor and his team create a 3D map of the all chemical rock- the diamonds and the inclusions inside.

They may contain g?? or so five minerals and other substances that can only be formed at hundreds of thousands atmospheres. Analysing this minerals reveals one of diamonds' astonishing secrets.

The best we can tell about inclusions are that this diamonds are approximately some 2 or 3 million years old.

As 3 billion years old, diamonds are among the earth's oldes creations. They are time capsules carrying information and mistery. To Tailor, a diamond's true value isn't what they can tell us about the distant past and it is what is walking in the planet.
1

评分次数

  • dorisever

继续努力!!!
口译专员推荐—>口译训练软件IPTAM口译通
homework:

The secret of the diamond lies in the carbon bonds. Carbon is one of the most plentiful substances known to the science. We find carbon in plants, animals and our bodies. Carbon everywhere. And yet diamonds are somewhat the rarest, most beautiful about all substances. What is the link? The link is the extremely rare environmental conditions that take ordinarily carbon, core, for example, and turn it into diamonds. We are talking about deep inside the earth’s curst. We have the pressures, the temperatures, sufficiently stored the bounding angles of the carbon atom.

Diamonds are not forged in the earth’s crust where most of the rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally, in the burst of the intense violence, this buried treasure rockets to the surface, carry by special high speed volcanos.

To geologist Larry Taylor at the University of Tennessee, diamonds are a treasure trophy. But not because of their beauty,

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something, they are telling us a story, so as understanding the story that is being told by this mineral which is at a key to all understanding of all our knowledge of the earth. “

“We can serve ourselves as the geology detectives, which try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed. “

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radio active atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. A diamond never grows old. Inside the diamond, the bonds between the atoms of the carbon are the strongest known. This makes the diamond not only the world’s hardest substance, but four times harder than the next hardest material. Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals, geologists call this fragments inclusions.

“The inclusion occurs inside the diamond. Everything around the diamond has changed its complete integrity. It has changed everything about it, its chemistry. What this little inclusion inside has remain prestige and virginal, to this day. And this is the little piece of material that we are looking for.

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets or sulfur minerals and other substances that can only be formed at
hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamond’s astonishing secrets.


“The best we can tell the inclusions that are inside the diamond date the diamond at being approximately somewhere between two or three billions years old.”

At three billion years old, diamonds are among the earth’s oldest creations. They are time capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distance past and the inner workings of the planet.
1

评分次数

  • dorisever

on jessicahdc
The secret of a diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon is everywhere, and yet diamonds are some of the rarest, most beautiful of our substances. What’s the link? The link is extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angels of the carbon atom.

Diamonds are not forged in the earth crust, where most of the rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally in
/ bursts of intense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the university of Tennessee, diamonds are a treasure trophy, but not because of their beauty.

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can serve geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable. Their internal bond’s so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world-hardest substance, but four times harder than the next hardest material. Like
amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamonds. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained prestige and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfur minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell we can tell the inclusions that are inside a diamond, date the diamond, at being approximately somewhere between 2 and 3 billions years old."

At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.
1

评分次数

  • dorisever

never let the fear of striking out keep you from playing the game

on ceth

本帖最后由 一叶星空 于 2009-5-7 13:19 编辑

The secret of a diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon is everywhere, and yet diamonds are some of the rarest, most beautiful of our substances. What’s the link? The link is extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angles of the carbon atom.

Diamonds are not forged in the earth crust, where most
other rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally in bursts of intensive violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the
University of Tennessee, diamonds are a treasure trophy, but not because of their beauty.

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can serve geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable
, their internal bonds so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world-hardest substance, but four times harder than the next hardest material. Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamonds. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained prestige and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfur minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond, date to diamond, at being approximately somewhere between 2 and 3 billions years old."


At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.

1

评分次数

  • dorisever

实现无障碍英语沟通
on 一叶星空


The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon is everywhere, and yet diamonds are some of the rarest, most beautiful of our substances. What’s the link? The link is extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angles of the carbon atom.

Diamonds are not forged in the earth crust, where most
other
rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally in bursts of intensive violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the
University of Tennessee
, diamonds are a treasure trophy, but not because of their beauty.

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can serve ourselves as geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable
, their internal bonds
so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world 's hardest substance, but four times harder than the next hardest material. Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"/ Inclusion occurs inside the diamond. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained prestige and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfur minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond, date to diamond, at being approximately somewhere between 2 and 3 billions years old."


At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.
1

评分次数

  • dorisever

继续努力!!!
普特听力大课堂

hw

The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in science, animals and our body. Carbon everywhere. And yet diamonds are some of the rarest ,most beautiful of all substances. What's the link? The link is extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust, we have the pressures the temperatures sufficient to distort the bonding angles of the carbon item.

Diamonds are not forged in the earth crust where most other rocks are made. They come from much deeper, from 100 miles within the earth interior. And occasionally, in burst of intense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the university of Tennessee, diamonds are a treasure trove but not because of their beauty.


This is only hard samples we have of the deep interior of the earth. The diamonds are telling us something, they are telling us a story. So it's understanding the story that's being told by these minerals which is at the key to all understanding of our knowledge of the earth. We can see ourselves to be geologically detectives. We're trying to recreate the crime after the fact. We look at the diamonds and we are trying to figure out exactly how they formed, where they formed, why they formed.

But the diamonds themselves review very little. Even their age has been a source of scientific controversy. Most rocks in minerals can be dated because they can contain certain radioactive items. As these items decay, they review their age. But diamonds never decay. Their chemistry is so stable. Their eternal bonds so tight, nothing inside the diamond changes. A diamond never grows old. Inside a diamond, the bonds between items of carbon are the strongest known. This makes diamonds not only the world hardest substance, but 4 times harders than the next hardest material. Like amber incasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

The inclusion occurs inside the diamond, everything around the diamond has changed its complete integrity,it's changed everything about it,its chemistry, but the / inclusion inside has remained pristine and virginal to this day and this is the little piece of material that we are looking for.

Using high resolution X-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock,the diamonds and the inclusions inside. They may contain garnets or sulphite minerals or other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reviews one of diamond's astonishing secrets.

As best we can tell, the inclusions that are inside diamond date the diamond at being approximately somewhere between 2 to 3 billion years old.

At 3 billion years old, diamonds are among the earth's oldest creations. They are time capsules, carrying information and mystery. To Taylor a diamond's true value isn't what it can tell us about the distant past and the inner workings of the planet.
自信源于内心的强大

I can't imagine it any other way. A world without you is only wasted space.
好栏目推荐之美国口语俚语

on 源源

The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon is everywhere, and yet diamonds are some of the rarest, most beautiful of our substances. What’s the link? The link is the extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to distort the bonding angles of the carbon atom.

Diamonds are not forged in the earth crust, where most other rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally in bursts of intense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the University of Tennessee, diamonds are a treasure trove, but not because of their beauty.

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can see ourselves as geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable, their internal bonds so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world hardest substance, but four times harder than the next hardest material. Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The Inclusion occurs inside the diamond. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained pristine and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulphite minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond, date to diamond, at being approximately somewhere between 2 and 3 billions years old."


At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.

1

评分次数

  • dorisever

自信源于内心的强大

I can't imagine it any other way. A world without you is only wasted space.
HW

The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to scientists. We find carbon in plants, animals and our bodies, carbon everywhere. And yet diamonds are some of the ?, the most beautiful above all substances. What's the link? The link is extremely rare environmental conditions that take ordinary carbon core for example and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angles of the carbon item.

Diamonds are not forward in the earth's crust where most of the rocks are made.
They come from much deeper. From 100 miles within the earth's interior. And ? in bursts of intense violence this very treasure rocket to the surface carry by special high speed volcanoes.

To geologist Larry Tailor at the University of TeniSea diamonds are a treasure trophy but not because their beauty.

This is the only hard samples we have out of the deep intense earth.

The diamonds are telling us something. They are telling us a story. So it is understanding that the story is being told by this diamonds out of the reach of the cator. Our understanding are knowledge of the earth.

We could serve ourselves as the geological detectives. we are trying to recreate the crime after the fact.

We look at the diamonds, we trying to figure out exactly how they are formed, where they are formed, why they are formed.

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy.Most rocks and minerals can be dated because they contain certain radioactive items. As these items decay, they reveal their age. But the diamonds never decay. Their chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. A diamond never grows old. Inside the diamond, the bonds between items of carbon are the strongest known. This makes the diamonds not only the world's hardest substances, but 4 times harder than the next hardest material.

Like amber in casing is inside, diamond sometimes capture bits of surrounding minerals, geologists call this fregments inclusions. Inclusion occurs inside the diamond, everything around the diamond has change its complete integrity, it's changed everything about it, its chemistry, but the look inclusion inside is remain, purest and virginal to this day. And this is a little piece of interior that we are looking for.

Using high resolusion x-ray tomography, a technique similar to a caps gun, Tailor and his team create a 3D ? map of the all chemical rock- the diamonds and the inclusions inside.

They may contain ? or so five minerals and other substances that can only be formed at hundreds of thousands atmospheres. Analysing this minerals reveals one of diamonds' astonishing secrets.

The best we can tell about inclusions are that this diamonds are approximately some 2 or 3 billion years old.

As 3 billion years old, diamonds are among the earth's older creations. They are time capsules carrying information and mistery. To Tailor, a diamond's true value isn't what they can tell us about the distant past and it is walking in the planet.
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  • dorisever

本帖最后由 ktdid 于 2009-5-7 17:22 编辑

on sophiaxd

"The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon \ everywhere. And yet diamonds are some of the rarest, most beautiful of all substances. What's the link? The link is the extremely rare environmental conditions that take ordinary carbon--coal, for example--and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to distort the bonding angles of the carbon atoms."

Diamonds are not forged in the earth crust, where most other rocks are made. They come from much deeper, from a hundred miles within the earth's interior. And occasionally in bursts of intense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the University of Tennessee, diamonds are a treasure trove, but not because of their beauty.

"This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it's understanding the story that's being told by these minerals\ which [it be ... that可以换成which么] is at the key to all \ understanding of our knowledge of the earth.

"We consider ourselves as the geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world's hardest substance, but four times harder than the next hardest material.

Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamond. Everything around the diamond has changed its complete integrity, has changed everything about it, its chemistry, but the little inclusion inside has remained pristine and virginal to this day. And this is the little piece of material that we are looking for."

Using high-resolution X-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfide minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds' astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond\ date the diamond as being approximately somewhere between two and three billion\ years old."

At three billion years old, diamonds are among the earth's oldest creations. They are time capsules, carrying information and mystery. To Taylor, a diamond's true value is in what it can tell us about the distant past and the inner workings of the planet.
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  • dorisever

專業代查字典兼回答一切可google到答案的問題
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本帖最后由 jessicahdc 于 2009-5-7 18:06 编辑


On Ktdid

"The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon everywhere. And yet diamonds are some of the rarest, most beautiful of all substances. What's the link? The link is the extremely rare environmental conditions that take ordinary carbon--coal, for example--and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to distort the bonding angles of the carbon atoms."

Diamonds are not forged in the earth crust, where most other rocks are made. They come from much deeper, from a hundred miles within the earth's interior. And occasionally in bursts of intense violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the University of Tennessee, diamonds are a treasure trove, but not because of their beauty.

"This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it's understanding the story that's being told by these minerals which
[it be ... that可以换成which,] is at the key to all understanding of our knowledge of the earth.

"We consider ourselves
to be / geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world's hardest substance, but four times harder than the next hardest material.

Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamond. Everything around the diamond has changed its complete integrity
. It’s changed everything about it, its chemistry, but the little inclusion inside has remained pristine and virginal to this day. And this is the little piece of material that we are looking for."

Using high-resolution X-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfide minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds' astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond date the diamond as being approximately somewhere between two and three billion years old."

At three billion years old, diamonds are among the earth's oldest creations. They are time capsules, carrying information and mystery. To Taylor, a diamond's true value is in what it can tell us about the distant past and the inner workings of the planet.



关于那个强调句型,那个Taylor好像真用的是which,人家是地理学家嘛,不像我们受过严格的语法训练

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  • dorisever

本帖最后由 sophiaxd 于 2009-5-7 18:13 编辑

To ktdid:

"This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it's understanding the story that's being told by these minerals which [it be ... that可以换成which么] is at the key to all understanding of our knowledge of the earth.
it be...that...应该只能用that/who 吧
我觉得,可能是,it's[understanding....]that's.....强调 diamond tell了什么东东。
后面的which 应该又是定从了,这样貌似说得通吧

"We consider ourselves to be geological detectives.
这句我听着可能是这样,自己听hw时候听是这个,改稿的时候反而米听出来- -#
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自信源于内心的强大

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The secret of a diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon is everywhere, and yet diamonds are some of the rarest, most beautiful of our substances. What’s the link? The link is extremely rare environmental conditions that take ordinary carbon coal, for example, and turn it into diamonds. We are talking about deep inside the earth crust. We have the pressures, the temperatures, sufficient to store the bonding angles of the carbon atom.

Diamonds are not forged in the earth crust, where most other rocks are made. They come from much deeper, from a hundred miles within the earth interior. And occasionally in bursts of intensive violence, this buried treasure rockets to the surface, carried by special high-speed volcanoes.

To geologist Larry Taylor at the University of Tennessee, diamonds are a treasure trophy, but not because of their beauty.

“This is the only hard samples we have of the deep interior of the earth. The diamonds are telling us something. They are telling us a story. So it’s understanding the story that’s being told by these minerals, which is at the key to all our understanding of our knowledge of the earth."

"We can serve geological detectives. We try to recreate the crime after the fact. We look at the diamonds and we try to figure out exactly how they formed, where they formed, why they formed."

But the diamonds themselves reveal very little. Even their age has been a source of scientific controversy. Most rocks and minerals can be dated because they contain certain radioactive atoms. As these atoms decay, they reveal their age. But diamonds never decay. Their chemistry is so stable, their internal bonds so tight. Nothing inside the diamond changes. A diamond never grows old.

Inside a diamond, the bonds between atoms of carbon are the strongest known. This makes diamonds not only the world-hardest substance, but four times harder than the next hardest material. Like amber encasing an insect, diamonds sometimes capture bits of surrounding minerals. Geologists call these fragments inclusions.

"The inclusion occurs inside the diamonds. Everything around the diamond has changed its complete integrity. It’s changed everything about it, its chemistry, but the little inclusion inside has remained pristine and virginal to this day. And this is the little piece of material that we are looking for. "

Using high resolution x-ray tomography, a technique similar to a CAT scan, Taylor and his team create a three-dimensional map of the volcanic rock, the diamonds and the inclusions inside. They may contain garnets, or sulfur minerals and other substances that can only be formed at hundreds of thousands of atmospheres. Analyzing these minerals reveals one of diamonds’ astonishing secrets.

"Especially we can tell the inclusions that are inside a diamond, date to diamond, at being approximately somewhere between 2 and 3 billions years old."


At three-billion-years old, diamonds are among the earth’s oldest creations. They are time-capsules, carrying information and mystery. To Taylor, a diamond’s true value is in what it can tell us about the distant past and inner workings of the planet.


Josephine~
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  • dorisever

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