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SSS 2008-04-16

时间:2010-05-13 06:48来源:互联网 提供网友:0922013129   字体: [ ]
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This is Scientific American's 60-Second Science, I'm Steve Mirsky. Got a minute?

When I got into a cage with a Komodo dragon almost 10 years ago for a story, I had no idea that its skull1 was so special.  Neither did scientists until now.  But a report in the Journal of Anatomy2 reveals that the world’s largest living lizard3 has a remarkable4, space frame skull. Space frame refers to a light, rigid5 structure with interlocking struts6 that can handle big loads. The shape of the skull bones and the arrangement of bones of different strengths is the key.  The researchers employed a technique called Finite Element Analysis, which is usually used to analyze7 trains or planes. But in this case it let them reverse engineer the Komodo to study the mechanical forces that the skull is subject to.As opposed to, say, an alligator8, the dragon has a pretty wimpy9 bite. So rather than clamp down on its victims, it yanks off chunks10 of meat, a move powered by incredibly strong neck muscles.  And made possible by that space-frame skull able to handle the huge forces involved. Our March 1999 article on Komodos is available at sciamdigital.com.

 

Thanks for the minute, for Scientific American's 60-Second Science, I'm Steve Mirsky.
 


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1 skull CETyO     
n.头骨;颅骨
参考例句:
  • The skull bones fuse between the ages of fifteen and twenty-five.头骨在15至25岁之间长合。
  • He fell out of the window and cracked his skull.他从窗子摔了出去,跌裂了颅骨。
2 anatomy Cwgzh     
n.解剖学,解剖;功能,结构,组织
参考例句:
  • He found out a great deal about the anatomy of animals.在动物解剖学方面,他有过许多发现。
  • The hurricane's anatomy was powerful and complex.对飓风的剖析是一项庞大而复杂的工作。
3 lizard P0Ex0     
n.蜥蜴,壁虎
参考例句:
  • A chameleon is a kind of lizard.变色龙是一种蜥蜴。
  • The lizard darted out its tongue at the insect.蜥蜴伸出舌头去吃小昆虫。
4 remarkable 8Vbx6     
adj.显著的,异常的,非凡的,值得注意的
参考例句:
  • She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
  • These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。
5 rigid jDPyf     
adj.严格的,死板的;刚硬的,僵硬的
参考例句:
  • She became as rigid as adamant.她变得如顽石般的固执。
  • The examination was so rigid that nearly all aspirants were ruled out.考试很严,几乎所有的考生都被淘汰了。
6 struts 540eee6c95a0ea77a4cb260db42998e7     
(框架的)支杆( strut的名词复数 ); 支柱; 趾高气扬的步态; (尤指跳舞或表演时)卖弄
参考例句:
  • The struts are firmly braced. 那些支柱上得很牢靠。
  • The Struts + EJB framework is described in part four. 三、介绍Struts+EJB框架的技术组成:Struts框架和EJB组件技术。
7 analyze RwUzm     
vt.分析,解析 (=analyse)
参考例句:
  • We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
  • The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。
8 alligator XVgza     
n.短吻鳄(一种鳄鱼)
参考例句:
  • She wandered off to play with her toy alligator.她开始玩鳄鱼玩具。
  • Alligator skin is five times more costlier than leather.鳄鱼皮比通常的皮革要贵5倍。
9 wimpy 2e2007f086bd13eaa7a1217cffa68306     
adj.懦弱的,无用的,哭哭啼啼的
参考例句:
  • I'd rather have a wimpy kid than a dead one, you know? 你知道么?我宁可要一个懦弱的孩子,也不想要一个死的。 来自互联网
  • I hate wimpy drinker. 我讨厌酒量差的人。 来自互联网
10 chunks a0e6aa3f5109dc15b489f628b2f01028     
厚厚的一块( chunk的名词复数 ); (某物)相当大的数量或部分
参考例句:
  • a tin of pineapple chunks 一罐菠萝块
  • Those chunks of meat are rather large—could you chop them up a bIt'smaller? 这些肉块相当大,还能再切小一点吗?
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