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美科学家称月球正在缩小

时间:2010-11-03 06:00来源:互联网 提供网友:hv7441   字体: [ ]
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    (单词翻译:双击或拖选)

    The Man in the Moon has become the latest victim of contraction1(缩小) in the housing market.
    Astronomers(天文学家) reporting on Thursday in the US journal Science said they had found previous undetected landforms(地貌,地形) which indicate that Earth's satellite has been shrinking... albeit2 by only a tiny amount.
    The intriguing3 features, called lobate scarps, are faults created when the Moon's once-molten interior began to cool, causing the lunar surface to contract and then crinkle, they said.
    Relative to the Moon's age, estimated at around 4.5 billion years, the contraction is recent, occurring less than a billion years ago, and is measured at about 100 meters (325 feet).
    Lobate scarps were first spotted4 near the lunar equator in the 1970s by panoramic5 cameras aboard the Apollo 15, 16 and 17 missions.
    Fourteen new faults have been been spotted in high-resolution images taken by NASA(美国国家航空和宇宙航行局)'s Lunar Reconnaissance Orbiter.
    The new discoveries show that the scarps are globally distributed and not clustered in equatorial regions, and this provides powerful evidence for the contraction scenario6.
    The investigation7 was headed by Thomas Watters of the Center for Earth and Planetary Studies at the Smithsonian Museum's National Air and Space Museum, Washington.(本文由在线英语听力室整理编辑)


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1 contraction sn6yO     
n.缩略词,缩写式,害病
参考例句:
  • The contraction of this muscle raises the lower arm.肌肉的收缩使前臂抬起。
  • The forces of expansion are balanced by forces of contraction.扩张力和收缩力相互平衡。
2 albeit axiz0     
conj.即使;纵使;虽然
参考例句:
  • Albeit fictional,she seemed to have resolved the problem.虽然是虚构的,但是在她看来好象是解决了问题。
  • Albeit he has failed twice,he is not discouraged.虽然失败了两次,但他并没有气馁。
3 intriguing vqyzM1     
adj.有趣的;迷人的v.搞阴谋诡计(intrigue的现在分词);激起…的好奇心
参考例句:
  • These discoveries raise intriguing questions. 这些发现带来了非常有趣的问题。
  • It all sounds very intriguing. 这些听起来都很有趣。 来自《简明英汉词典》
4 spotted 7FEyj     
adj.有斑点的,斑纹的,弄污了的
参考例句:
  • The milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
  • Sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。
5 panoramic LK3xM     
adj. 全景的
参考例句:
  • Most rooms enjoy panoramic views of the sea. 大多数房间都能看到海的全景。
  • In a panoramic survey of nature, speed is interesting because it has a ceiling. 概观自然全景,速率是有趣的,因为它有一个上限。
6 scenario lZoxm     
n.剧本,脚本;概要
参考例句:
  • But the birth scenario is not completely accurate.然而分娩脚本并非完全准确的。
  • This is a totally different scenario.这是完全不同的剧本。
7 investigation MRKzq     
n.调查,调查研究
参考例句:
  • In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。
  • He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。
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TAG标签:   contraction  contraction
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