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SSS 2009-07-17

时间:2010-05-18 03:26来源:互联网 提供网友:mark@li   字体: [ ]
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    (单词翻译:双击或拖选)

transcript1

This is Scientific Ameican’s 60-Second Science. I’m Karen Hopkin. Got a minute?

 Horse racing2 is a sport that's 200 years old. And a day at the track is much more exciting now than it was back then. That's because horses are faster than they used to be. Or are they? A study in the July 17th issue of Science shows that it's the way that jockeys ride that's made racing more heart-pounding than before. Images from the late 1800s show that the boys in silks looked pretty relaxed as they went along for the ride. But modern jockeys-crouching, tightly coiled atop their galloping3 steeds-actively work to make sure their weight doesn't slow things down. Using GPS to track the riders' motions, scientists found that jockeys move out of phase with their mounts. That means that the horse doesn't have to physically4 move the jockey through each cyclical stride. As a result, races are five to seven percent faster than they were 100 years ago.

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


点击收听单词发音收听单词发音  

1 transcript JgpzUp     
n.抄本,誊本,副本,肄业证书
参考例句:
  • A transcript of the tapes was presented as evidence in court.一份录音带的文字本作为证据被呈交法庭。
  • They wouldn't let me have a transcript of the interview.他们拒绝给我一份采访的文字整理稿。
2 racing 1ksz3w     
n.竞赛,赛马;adj.竞赛用的,赛马用的
参考例句:
  • I was watching the racing on television last night.昨晚我在电视上看赛马。
  • The two racing drivers fenced for a chance to gain the lead.两个赛车手伺机竞相领先。
3 galloping galloping     
adj. 飞驰的, 急性的 动词gallop的现在分词形式
参考例句:
  • The horse started galloping the moment I gave it a good dig. 我猛戳了马一下,它就奔驰起来了。
  • Japan is galloping ahead in the race to develop new technology. 日本在发展新技术的竞争中进展迅速,日新月异。
4 physically iNix5     
adj.物质上,体格上,身体上,按自然规律
参考例句:
  • He was out of sorts physically,as well as disordered mentally.他浑身不舒服,心绪也很乱。
  • Every time I think about it I feel physically sick.一想起那件事我就感到极恶心。
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