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[科学美国人60秒] 【整理】SSS 2008-09-22

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[科学美国人60秒] 【整理】SSS 2008-09-22

SSS 2008-09-22

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Tune in every weekday for quick reports and commentaries on the world of science-- it'll just take a minute.


Fish from almost 400 million years ago appear to have bones in their fins that predisposed future animals to the development of fingers. Karen Hopkin reports.



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【整理】SSS 2008-09-22【整理人】ivyxk

 

Transcript

 

 This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

 

Fingers are pretty nifty. They let you to grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from? In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods: that is, critters with four limbs. One reason they thought that is because a fossilized skeleton of an ancient fish didn’t appear to have any fingers. Or at least any distinct digits in its pectoral fin. But tetrapods, which evolved from fish, did.

Now scientists writing in the September 21st online issue of Nature say that that thinking was…a little fishy. Because they’ve unearthed evidence that suggests that that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on a specimen about 380 million years old. And they found that the fish’s right fin, which was unusually well-preserved, does appear to have digitlike bones. The reason other researchers previously missed them, they think, is because in their samples the fingers were hidden behind marks left by the fish’s scales. So fish, too, seem to have incipient fingers. A finding we give two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

 

 

[ 本帖最后由 ivyxk 于 2008-9-24 14:17 编辑 ]

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homework

好好久末有写过了

Fingers are pretty nifty. They let you grub lottery, type on the keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

 

In the 1990, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tyture parts. That is quit its forelimbs.  One reason they thought that because of farthlot scholar ancient fish did not appear many fingers. Think digits and its /fins. but teture parts which involved in fish did.

 

 Now scientists writing in Sep.21st online issue of Nature says that is little fish because they’ve found evidence that suggest that ancient fish did indeed have fingers in its fins. The researchers did CT scare on the space about 380 million years old. They found the fishes right fin which is unusually well preserved does appeared have digit-like bones. The reasons other researchers previous miss them, they think is because a nail sample the fingers were hidden behind marks left by the fish scales. So fish do seem to have fingers, a finding regive to sum up.
1

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  • ivyxk

Be self-confident!
Be optimistic!
Be flexible!
立即获取| 免费注册领取外教体验课一节

Homework (忘记写homework咯----ivyxk)

This is Scientific American's 60-Second Science.I'm Cynthia Graber.This'll just take a minute.

Fingers are pretty nifty. They let you grub lottery, type on the keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

 

In the 1990, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tyture parts. That is quit its forelimbs.  One reason they thought that because of farthlot scholar ancient fish did not appear to have any fingers. Think digits and its /fins. but torture parts which involved in fish did.

 

 Now scientists writing in Sep.21st online issue of Nature says that is little fish because they’ve found evidence that suggest that ancient fish did indeed have fingers in its fins. The researchers did CT scare on the space about 380 million years old. They found the fishes right fin which is unusually well preserved does appeared have digit-like bones. The reasons other researchers previously miss them, they think is because a nail sample the fingers were hidden behind marks left by the fish scales. So fish do seem to have fingers, a finding regive to sum up.

Thanks for the minute for Scientific American's 60-Second Science.I'm Cynthia Graber.

[ 本帖最后由 ivyxk 于 2008-9-24 14:19 编辑 ]
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  • ivyxk

实现无障碍英语沟通

Homework (改错人了哦--------ivyxk)

This is Scientific American's 60-Second Science.I'm Cynthia Graber.This'll just take a minute.


 

Fingers are pretty nifty. They let you to grab a /, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods. That is, critters with four limbs.  One reason they thought that is because a fossilized skeleton of ancient fish did not appear to have any fingers or at least any distinc digits in its pectoral fins. but tetrapods which evolved from fish did.

 

 Now scientists writing in Sep.21st online issue of Nature says that thinking was, a little fishy because they’ve unearthed evidence that suggests that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on a specimen about 380 million years old. They found the fish's right fin which is unusually well preserved does appeared have digit-like bones. The reasons other researchers previously miss them, they think is because in their samples, the fingers were hidden behind marks left by the fish scales. So fish too, seem to have fingers, a finding we gave two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science.I'm Cynthia Graber.

[ 本帖最后由 ivyxk 于 2008-9-24 14:21 编辑 ]
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  • ivyxk

口译专员推荐—>口译训练软件IPTAM口译通

on rainphy

Fingers are pretty nifty. They let you grab a Latte, type on the keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods that is critters with forelimbs.  One reason they thought that is because a fossilized skeleton of an ancient fish didn't appear to have any fingers.Or at least any distinct digits and its pectoral fin. but tetrapods which evolved from fish did.

 

Now scientists writing in the Sep.21st online issue of Nature say that thinking is a little fishy because they've unearthed evidence that suggests that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on the specimen of about 380 million years old. They found that the fish's right fin which was unusually well preserved does appear to have digit-like bones. The reason other researchers previously missed them, they think,is because in their samples the fingers were hidden behind marks left by the fish's scales. So fish do seem to have incipient fingers, a finding we give two thumbs up.

1

评分次数

  • ivyxk

坚持下去,享受下去...
That man is coming back again...

Homework (改错人了哦---------ivyxk)

This is Scientific American's 60-Second Science. I'm Karen Hopkin(?). This'll just take a minute.


Fingers are pretty nifty. They let you to grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods. That is, critters with four limbs.  One reason they thought that is because a fossilized skeleton of ancient fish didn’t appear to have any fingers or at least any distinct digits in its pectoral fin but tetrapods which evolved from fish did.

 

 Now scientists writing in the Sep.21st online issue of Nature say that thinking was a little fishy because they’ve unearthed evidence that suggests that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on a specimen about 380 million years old. They found the fish's right fin which is unusually well preserved does appear to have digit-like bones. The reason other researchers previously miss them, they think, is because in their samples, the fingers were hidden behind marks left by the fish’s scales. So fish too, seem to have incipient fingers, a finding we gave, two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin(?).

[ 本帖最后由 ivyxk 于 2008-9-24 14:22 编辑 ]
1

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  • ivyxk

homework

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

 

Fingers are pretty nifty. They let you grab a *, type on the keyboard; even pull up your pants. But did you ever wonder where do fingers come from?

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded the fingers were pretty much invented by the first *.That is, critters with four limbs. One reason they thought that is because fossilized skeleton of ancient fish didn't appear to have any fingers. *** But * which evolved from fish did.

 

Now scientists writing in Sep 21st online issue of Nature say that thinking was a little* because they have unearth evidence that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on a specimen about 380 million years old. They found the fish's right fin which was unusually well preserved does appear to have digit-like bone. The reason other researches previously miss them they think, is because in their samples fingers were hidden behind marks left by the fish's scales. So fish, too, seem to have * fingers, a finding we gave two thumbs up.

 

Thanks for the minute for Scientific American's 60 Second Science. I'm Karen Hopkin.

1

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  • ivyxk

胜负都是暂时的,只有拼搏的精神是永恒的~~
实现无障碍英语沟通

Homework

This is Scientific American's 60-Second Science. Im Karen Hopkin. This will just take a minute.

 

Fingers are pretty nifty, they let you grab a latte, type on a keyboard even put up your pants. But you ever wonder where the fingers come from. In the 1990, scientist gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods. That is, critters with four limbs. One reason they thought that is because fossilized skeleton of ancient fish didn't appear to have any fingers or at least any distinct digit in its pectoral fin. But tetrapods which evolved from fish did. Now scientist writing in a September 21st online issue of Nature saying that begins with a little fish. Because late honest evidences that suggested that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on a specimen that is about 380 million years old. They found that the fish's right fin which is unusually well preserved does appear to have digit like bones. The reason other researchers previously missed them they think is because their samples the fingers were hidden behind marks left by fish scales. So fish too seems to have simian fingers ,a finding we gave, to sums up.

 

Thanks for the minute. For Scientific American's 60-Second Science. Im Karen Hopkin.

[ 本帖最后由 griselda 于 2008-9-22 20:35 编辑 ]
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  • ivyxk

韦氏字典是无敌的^o^
铲除一切猴面包树……
Everything is about attitude “)
普特听力大课堂

on wonderful

 

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

 

Fingers are pretty nifty. They let you grab a lottie, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods that is critters with forelimbs.  One reason they thought that is because a fossilized skeleton of an ancient fish didn't appear to have any fingers.Or at least any distinct digits and its pectoral fin. but tetrapods which evolved from fish did.

 

Now scientists writing in the Sep.21st online issue of Nature say that thinking is a little fishy because they've unearthed evidence that suggests that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on the specimen of about 380 million years old. They found that the fish's right fin which was unusually well preserved does appear to have digit-like bones. The reason other researchers previously missed them, they think,is because in their samples the fingers were hidden behind marks left by the fish's scales. So fish do seem to have incipient fingers, a finding we give two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

1

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  • ivyxk

One without faith is sure to fail 新浪微薄:福威武威
好栏目推荐之美国口语俚语

on cross

This is Scientific American's 60-Second Science. I’m Karen Hopkin. This will just take a minute.

 

Fingers are pretty nifty. They let you grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder where the fingers come from.

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods, that is, critters with forelimbs. One reason they thought that is because a fossilized skeleton of an ancient fish didn't appear to have any fingers or at least any distinct digits and its pectoral fin. But tetrapods which evolved from fish did.

 

Now scientists writing in the September 21st online issue of Nature say that thinking is a little fishy because they’ve unearthed evidence that suggests that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on the specimen of about 380 million years old.

 

They found that the fish's right fin which was unusually well preserved does appear to have digit-like bones. The reason other researchers previously missed them, they think, is because their samples the fingers were hidden behind marks left by the fish’s scales. So fish do seem to have incipient fingers, a finding we give two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science. I’m Karen Hopkin.

 

我还在,你们在哪里?北星。翩然。芊芊。叶叶。。。。

homework

大家都好强 我还得努力

This is scientific American 60 second science, I’m / this will just take a minute.

 

Fingers are pretty nifty, they like to grab /, type on a keyboard even pull up your pens. But did you ever wonder where your finger comes from. In the 1990s scientists gave this problem a lot of thought, and they concluded that the fingers were pretty much invented by the first tetrapod that is equators with four limbs one reason they thought that because a fossilized skeleton of an ancient fish didn’t appear to have any fingers or at least any distinct digits in their pectoral fins but tetrapod which evolve from fish did.

 

Now scientists write in an September 21 on line issue of nature say that they thinking was a little fishy, because they’ve found evidence that ancient fish did indeed have finger in their fins the researcher did a CT scan on a specimen about 380 million years old they found that the fish’s fight fin which is usually well preserved does appear to have digits like bones, the reason other researchers previously miss them they think, is because in their samples the fingers were hidden behind marks left behind their scales. So fish too seem to have incipient fingers, a finding we gave two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science. I’m/

1

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  • ivyxk

好好学习,天天向上。

我有点傻
我有点呆

on grance  小改一处

 

This is Scientific American's 60-Second Science. I’m Karen Hopkin. This will just take a minute.

 

Fingers are pretty nifty. They let you grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder where the fingers come from.

 

In the 1990s, scientists gave this problem a lot of thought. And they concluded that fingers were pretty much invented by the first tetrapods, that is, critters with forelimbs. One reason they thought that is because a fossilized skeleton of an ancient fish didn't appear to have any fingers or at least any distinct digits and its pectoral fin. But tetrapods which evolved from fish did.

 

Now scientists writing in the September 21st online issue of Nature say that thinking is a little fishy because they’ve unearthed evidence that suggests that ancient fish did indeed have fingers in its fins. The researchers did a CT scan on the specimen of about 380 million years old.

 

They found that the fish's right fin which was unusually well preserved does appear to have digit-like bones. The reason other researchers previously missed them, they think, is because their samples the fingers were hidden behind marks left by the fish’s scales. So fish too seem to have incipient fingers, a finding we give two thumbs up.

 

Thanks for the minute for Scientific American's 60-Second Science. I’m Karen Hopkin.

1

评分次数

  • ivyxk

No success has come without a good fight.
每天半小时 轻松提高英语口语

translation

晚上才有时间,唉,把这个翻译赶出来!

translation

手指相当灵巧。它让你牵手心爱之人,游刃于键盘之上,甚至是拉你的短裤。但是你们是否想知道:手指究竟是从哪里来呢? 在20世纪末,科学家曾就此思考甚多。他们得出的结论是:手指很有可能是起源于四足动物,即最早进化而形成前肢的动物。原因之一是:他们认为,从一个年代久远的鱼类的化石骨架并没有发现有形成手指的可能,至少在鱼类的胸鳍中尚未发现任何明显的手指雏形,但是四足动物一定是从鱼类进化而来。 9月21日的《自然》杂志在线的一篇报道中这样提到:由于科学家们发现了一些细微的证据,它们表明在远古鱼类的鱼鳍中的确存在“手指”,所以以上的说法值得怀疑。 研究人员在做过一个2亿8千万年前的一个鱼的CT扫描后发现:在完好保存的样本鱼的右鳍上好像具有手指形状的骨痕。研究人员以前忽视这些的原因,是因为在他们自己的样本中,鱼类的“手指”藏在了鱼鳞这个“面具”里面。 因而,鱼类可能是最早的手指缔造者。 这的确是一个很棒的发现! 郑重宣布:本人的翻译仅供学习交流之用!All rights

reserved!

 

 

grab a latte   指用手拿拿铁咖啡 吧?

[ 本帖最后由 ivyxk 于 2008-9-24 14:28 编辑 ]
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  • ivyxk

口译专员推荐—>口译训练软件IPTAM口译通

我想问问 安全吗?

郑重宣布:本人的翻译仅供学习交流之用!All rights reserved!
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