只用一本书提高英语听力能力!重温经典名著双语阅读小编推荐:跟着纪录片学英语不背单词和语法,轻松学英语
返回列表 回复 发帖

[科学美国人60秒] 【整理】SSS 2008-07-08

提高英语听力能力 找对方法很重要!

[科学美国人60秒] 【整理】SSS 2008-07-08

SSS 2008-07-08

user posted image


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


Whale and dolphin fins, flippers and tails are bumpy, which produce disturbed wakes--that increase lift and decrease drag. Engineers are taking note. Cynthia Graber reports



【电信用户1】在线播放和下载

Download mp3


【电信用户2】下载
Download mp3

【网通/教育网用户】在线播放和下载


Download mp3



Standard版听写规则(新手必读)

版主提示:
一、若是自己的听写稿, 请发帖时标注'Homework'.
二、若是改稿, 请发帖时标注'on 某某人'并在修改处标红.
三、为了达到最快的下载速度,推荐使用迅雷高速下载本站音频/视频材料.

 

 

【整理】SSS 2008-07-08【整理人】ZPC224

Transcript

 

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

 

Whales and dolphins were molded by evolution to glide through water. We’ve been trying to create streamlined designs ourselves for structures such as wind turbine blades. Now researchers are examining the flippers, fins and tails of our water-dwelling cousins to learn how to improve engineering designs. Doctor Frank Fish—yes, that’s really his name, from West Chester University in Pennsylvania presented this research July 8 at the Society for Experimental Biology’s annual meeting in Marseille.Here’s one example of the way Doctor Fish’s research is being applied. Whale flippers have a bumpy edge. This makes little sense to engineers. They’ve designed structures like wings and blades that ensure a steady air flow. But it turns out the unsteady flow over this more complex shape increases lift and reduces drag much better than any previous manmade design. It has to do with something called vortices. These are small tornado-shaped water formations in an animal’s wake. The bumps on a whale’s flipper help form vortices that generate more lift, more smoothly. Engineers are using this insight to design an entirely new wind turbine blade so that we can generate power from wind as efficiently as whales and dolphins fly through the water.


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

[ 本帖最后由 zpc224 于 2008-7-9 11:58 编辑 ]

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

支持普特英语听力就多多发帖吧!您们的参与是对斑竹工作最大的肯定与支持!如果您觉得还不错,推荐给周围的朋友吧~

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

 

 

Whales and dolphins were molded by evolution to glide through water. We've been trying to create stream line designs ourselves for structure such as wind turbine blades. Now researchers are examining the flippers,fins and tails about water dwelling cousins to learn how to improve engineering designs. Dr. Frank Fish,yes,that's really his name,from from West Chester University in Pennsylvania, presented this research July 8 at the Society for Experimental Biology's annual meeting in  Marseille.Here is one example of the way Dr.Fish's research is being applied.

 


Whale flippers have a bumpy edge. This makes little sense to engineers.They've designed structures like wings and blades that ensure a steady air flow. But it turns out the unsteady flow over this more complex shape increased lift and reduces drag much better than any previous man-made design.It has to do with something called water seas. This are small tornado-shaped water formations in an animal's wake.The bumps on a whale's help form water seas that generate more lift, more smoothly. Engineers are using this insight to design an entirely new wind turbine blade,so that we can generate power from wind,as efficiently as whales and dolphins fly through the water.

 

 

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

1

评分次数

  • zpc224

這個世界最壞罪名
                            叫太易動情




立即获取| 免费注册领取外教体验课一节

on practice100

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

 

 

Whales and dolphins were molded by evolution to glide through water. We've been trying to create stream line designs ourselves for structure such as wind turbine blades. Now researchers are examining the flippers,fins and tails about water dwelling cousins to learn how to improve engineering designs. Dr. Frank Fish,yes,that's really his name,from from West Chester University in Pennsylvania, presented this research July 8th at the Society for Experimental Biology's annual meeting in  Marseille.Here is one example of the way Dr.Fish's research is being applied.

 


Whale flippers have a bumpy edge. This makes little sense to engineers.They've designed structures like wings and blades that ensure a steady air flow. But it turns out the unsteady flow over this more complex shape increases lift and reduces drag much better than any previous man-made design.It has to do with something called water seas. These are small tornado-shaped water formations in an animal's wake.The bumps on a whale's flipper help form water seas that generate more lift, more smoothly. Engineers are using this insight to design an entirely new wind turbine blade,so that we can generate power from wind,as efficiently as whales and dolphins fly through the water.

 

 

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

1

评分次数

  • zpc224

实现无障碍英语沟通

on sherrycream

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

 

Whales and dolphins were molded by evolution to glide through water.We've been trying to create streamlined designs ourselves for structures such as wind turbine blades.Now researchers are examining the flippers,fins and tails of our water dwelling cousins to learn how to improve engineering designs.Dr.Frank Fish,Yes that's really his name,from / Westchester University in Pennsylvania presented this research July 8th,at the society for experimental biology's annual meeting in Marseille,Here is one example of the way Dr. Fish's research's being applied.Whale flippers have a bumpy edge,this makes little sense to engineers.They've designed structures like wings and blades that ensure a steady airflow.But it turns out the unsteady flow over this more complex shape increases lift and reduces drag much better than any previous man-made design.It has to do with something called vortices.These are small tornado shaped water formations in an animal's wake.The bumps on a whale's flipper help form vortices that generate more lift more smoothly.Engineers are using this insight to design an entirely new wind turbine blade so that we can generate power from wind as efficiently as whales and dolphins fly through the water.


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

1

评分次数

  • zpc224

坚持下去,享受下去...
That man is coming back again...
口译专员推荐—>口译训练软件IPTAM口译通
标准答案中的这句话But it turns out the unsteady flow over this more complex shape increased lift and reduces drag much better than any previous manmade design.当中的increased应该是increases吧?and 前后的时态应该是一致的阿,后面是reduces,并且听音频也应该是increases.
1

评分次数

  • zpc224

homework

This is Scientific American 60 second science. I’m Cynthia Graber

 

This will just take a minute.

 

Whales and dolphins were molded by evolution to glide through water. We’ve being trying to create streamline designs ourselves for structures such as winter turbine blazes. Now researchers are examining the flippers, fins and tiles of our water dwelling cousins to learn how to improve engineering designs

 

Dr. Frank Fish, yes that’s really his name, from West Chester University in Pennsylvania presented the research July 8th, at the society for experimental biology’s annual meeting in Marseille Here’s one example of the way Dr. Fish’s research is being applied.

 

Whale flippers have a bumpy edge, this makes little sense to engineers; they’ve designed structures like winds and blazes that ensure a steady airflow. But it turns out the unsteady flow over the more complex shape increases lift and reduces drag much better than any previous man-made design. It has to do with something called vortices, These are small tornado shaped water formations in an animals’ wake. (什么意思?) T

 

he bumps on the whales’ flipper help form vortices, that generate more lift more smoothly. Engineers are using this insight to design an entirely new wind turbine blade so that we can generate power from wind as efficiently as whales and dolphins fly through the water.

 

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

[ 本帖最后由 hanqialice 于 2008-7-9 17:30 编辑 ]
Connasi-toi toi-meme

http://hanqialice.spaces.live.com/
返回列表