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[自然百科] 【整理】2009-05-07 永恒的钻石(二)

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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~
On Jessicahdc

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 is at the key to all understanding of our knowledge of the earth.

"We consider ourselves 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 (听上去决得是it's best) we can tell the inclusions that are inside a diamond, date the diamond at 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

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本帖最后由 ktdid 于 2009-5-7 23:49 编辑

"The best we can tell: the inclusions that are inside a diamond date (谓语动词,主语inclusions,主谓之间没有用逗号的必要) the diamond as being approximately somewhere between two and three billion years old."
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本帖最后由 hellokina38 于 2009-5-8 02:04 编辑

Homework

"The secret of diamond lays in the carben bond. Carben is one of the most "clenerful" substance known to science. We find carben in plants , animals and our bodys, carben everywhere. And diamonds are some of the rarest ,most beautiful of our substance. What's the link , the link is extremely rare environmental conditions that take ordinary carben coal for example and turned it in to diamonds ,we are talking about the deep inside the earth crust, we have the presures and temperatures, suffencient to stop the bonding angels of the carben atem. "

Diamonds are not forged in the earth crust where most other rocks are made. They come from much deeper from 100mile within the earth sinterial. And occasionally in brusts of intance vialets is beryed treasure rocked to the surface carried by

special high speed vocanols.To geologist Larry Tayler, at the university of Tayler see, diamonds are a treasure trove but not because of their beauty.

"This is the only hard samples we have on the deepen interan the earth. The diamonds are telling us something and it will tell us a story so its understanding this story has being told by this minerals which is having the kitter more understanding of knowledge of the earth. We concerned on the sort of BG detectings which we look at the diamonts . We look at the diamond which we want to figure out exactly how they formed and where they formed and why they formed?"

But the diamonds themselves reveal very little, even their age has been a source of scientific controvercy. Most rocks and minerals can be detected because they contain certain radio active atems. As these atem decay, they review their age. But diamonds never decay. their chemistery is so stable ,their internal bond is so tight, nothing inside the diamond changes. A diamond never grows old. Inside the diamond the bonds between atems and carben are the strongest known. This makes diamonds not only the world hardest substances but 4 times harder than the next hardest material. Like enter incasing insect, diamonds sometimes capture bits of surrending mineral. Geologies called this fragments inclusions.

"Inclusion occured inside the diamond. Every thing around the diamond has changed its complete intecrety. It's changed everything about it, its chemistery but the lily inclusion inside has remain presite and versional to the state and this is the little piece of material that we are looking for."

Using high resolution extra temolography a technique similar to a capeskan. Tayler and his team created a 3-diamensional map of the vocanical rock the diamonds and includes it's inside. They may contain garnets or so far minerals and other subsatances that can only be formed at 100 of thousands of atmespheres. Analying these minerals review one of diamonds astonising sequence.

"The best we can tell inclusion which is inside the diamond, date the diamond being approximately some / been increased 2-3 billions' old ."

At 3 billion years old, diamonds are among the earth oldest creations, they are time capsoles carrying information and mystery. To tayler a diamond's true value is it can work to tell us the distant past and the inner workings of the planet.
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本帖最后由 dorisever 于 2009-5-8 09:23 编辑

on  wukeyu123

"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 to (弱读)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.

"So the best we can tell: the inclusions that are inside a diamond date the diamond of 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.

本帖最后由 dorisever 于 2009-5-8 18:43 编辑

       To Doris

1) 关于是geological 还是 geologic搜到一句话:

In this video from Nature, geological detectives use ancient diamonds to learn more about Earth's inner layers.

出处:http://www.teachersdomain.org/collection/k12/sci.ess.earthsys.earthcomp/


2) 关于date 在这里的用法:

date: v. Assign a date to; determine the (probable) date of
e.g. to date an antique, fossils, etc.

…the inclusions that are inside a diamond date the diamond as being approximately somewhere between two and three billion years old.
这里the inclusions 作主语,date 作谓语,后面的the diamond作宾语,
全句的意思是:通过一颗钻石里面的内含物可以推断出它的年代大概在2030亿年之间。

搜到一句被动态的例子:
In 1967, the fossils were dated as being 130,000 years old, although the scientists doubted the accuracy of their dating technique…
出处:http://www.eurekalert.org/pub_releases/2005-02/uou-toh021105.php


Ktdid 你说话太精炼,还是我来帮你elaborate一下哈。

。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
好详细,谢谢Jessica
关于geologic detective  我是根据读音拼写的

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本帖最后由 dorisever 于 2009-5-8 18:37 编辑

嗯,google一下 "date the * as being" (带引号),有大量的例句,比如:

Many scholars date the Gospels as being written 17-32 years after Jesus' death.

Secular scientists date the universe as being approximately 13.7 billion years using standard cosmologies.

However, other Christians, in light of modern scientific advances that date the earth as being about 4.5 billion years old, believe that the days of Genesis ...

The 37 coins contained in the purse date the burial as being circa 620 A.D.

。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
厉害~~我早上也google 了一下,找不出这些例句啊,囧一个
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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 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.
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hw
the secret of the diamond lies in the carbon bound, 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 were some of the rares most beautiful of all sustances. 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 did store the bonding angles of the carbon item."
diamonds are not forged in the earth crust or most other rocks are made, they come from much deeper, from 100 miles in the earth interior. and casually in burst of intense violence, this very treasure rocks to the surface. carry by special high speed volcanos. to geologist larry talyor at the university of Tennessee, diamonds are a treasure trove, but not because of their beauty.
"this is the only hard sample we have of the deepen terrain earth, the diamonds are telling us something, yet telling a story, such understanding, the story that's been told by these minerals which has the cater understanding our the knowledge of the earth."
"we can serve sort of geological detects, we're trying to recreate the crime after the effect. we looked at the diamond, we're trying 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 in minerals can be dated because they contain certain radiate active items. as these items decay, they reveal their age. but diamonds never decay. there chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. a diamonds never grows old. inside the diamond, the bonds between items and carbon are the strongest known, this mixed diamond not only the word hardest substances but 4 times harder than next hardest material. like amber and caser inside, diamonds sometimes capture bit of the surrounding minerals. geologists call this fragment inclusions.
inclusion occured inside the diamond, everything around the diamond has changed its complete integrate. it changed everything about it, its chemistry but the little inclusion inside that remain to ___ and virginal to this day, and this is the little piece of material that i was looking for.
using high resolution x-ray tomography, a technic similar to a cap scan. talyor and his team created a 3-dimensional map of volcano rock. the diamonds and the inclusion inside. they may contain ___ or ___ minerals and other substances that can only be formed at hundreds of thousands atmospheres. analysing these minerals reveals one of diamonds astonishing secrets.
the best we can tell inclusion that inside diamond date diamond at proximate some create 2 or 3 billion years old, at 3 billion years old. diamonds are among the earth's oldest creations. they are time capsules, carring information and mystery. to tayler, a diamond's true value is what we can tell us about the distance passed and the inner working of the planet
___:words that i can't tell apart

HW

本帖最后由 fionainnicemood 于 2009-5-10 20:43 编辑

ON 王元之
the secret of the diamond lies in the carbon bound, 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 were some of the rarest most beautiful of all sustances. 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 did store the bonding angles of the carbon atoms."
diamonds are not forged in the earth crust or most other rocks are made, they come from much deeper, from 100 miles in the earth interior. and casually in burst of intense violence, this very treasure rocks to the surface. carry by special high speed volcanos. to geologist larry talyor at the university of Tennessee, diamonds are a treasure trove, but not because of their beauty."this is the only hard sample we have of the deepen terrain earth, the diamonds are telling us something, yet telling a story, such understanding, the story that's been told by these minerals which has the cater understanding our the knowledge of the earth."
"we can serve sort of geological detects, we're trying to recreate the crime after the effect. we looked at the diamond, we're trying 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 in minerals can be dated because they contain certain radiate active items. as these items decay, they reveal their age. but diamonds never decay. there chemistry is so stable, their internal bonds so tight, nothing inside the diamond changes. a diamonds never grows old. inside the diamond, the bonds between atoms and carbon are the strongest known, this mixed diamond not only the word hardest substances but 4 times harder than next hardest material. like amber incasing the insect , diamonds sometimes capture bit of the surrounding minerals. geologists call this fragment inclusions.inclusion occured inside the diamond, everything around the diamond has changed its complete integrate. it changed everything about it, its chemistry but the little inclusion inside that remain to pristine and virginal to this day, and this is the little piece of material that i was looking for. using high resolution x-ray tomography, a technic similar to a cap scan. talyor and his team created a 3-dimensional map of volcano rock. the diamonds and the inclusion inside. they may contain garnets or sulfide  minerals and other substances that can only be formed at hundreds of thousands atmospheres. analysing these minerals reveals one of diamonds astonishing secrets.especially we can tell inclusion that inside diamond date diamond at proximate some create 2 or 3 billion years old, at 3 billion years old. diamonds are among the earth's oldest creations. they are time capsules, carring information and mystery. to tayler, a diamond's true value is what we can tell us about the distance passed and the inner working of the planet
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     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.
On Doris

"The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known for 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 (
弱读)
be geologic detectives. We’re trying to recreate the crime after the fact. We look at the diamonds and we’re trying 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 the best we can tell: the inclusions that are inside a diamond date the diamond as (
不过我听起来是更像at) being approximately somewhere between two and three billion years old."
At
(这个地方是不是也应该一致改成as呢) 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.

To Jessica JJ, 关于那个geologic detectives, 虽然你查到了有原文用geological的,但偶个人觉得这两个词差别不大,文献里都有用的,有时可能也看个人习惯了,这个地方不一定固定搭配,听这老头说的更像是geologic,不过也没准他懒,想说geological但嘴巴省了。。。。不过这个意思上影响不大哈。。。 Emm,那个inclusion在地质中的准确翻译应该是包裹体哈。

还有那句,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. 俺觉得which使用的好像没问题吧,是不是which后面整个修饰mineral,而that’s后面都是修饰story的,而story相当于it的同位语。。。他在it’s understanding后面有停顿一下哦。。。就是说storyunderstanding的。。。不过这纯属个人感觉,不一定学术哈。。。。不知道我说明白了没。。。

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to zkdaisy

at xx years old 算是习惯用法了吧,虽然看起来语法有点怪

which那里偶觉得你的解释还是不通
首先,如果which的先行词是these minerals,那么从句里动词应该是复数are
is at the key的主语只可能是the story或understanding the story
如果是两个定语从句修饰the story,我看不出有什么理由前一个用that而后一个用which
况且,按照你的解释,主句变成了It's understanding或The story is understanding,不像一句完整的话,起码在当前的上下文中不能成立。把it's换成its好像也没有意义。

题外话,zk是不是学地质的呀?看你那个科学家写的诗,偶查了半天也不能确定“流体包裹体”到底是啥,也没好意思问。。
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