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美国英语听力80篇2 Lesson39

时间:2011-03-26 05:33来源:互联网 提供网友:rf855803   字体: [ ]
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[00:05.75]The American space agency has released to the public the first of many new pictures of Jupiter's Moon,Io.
[00:15.41]NASA's Galileo spacecraft took the pictures last July and October using both black and white film and color film.
[00:25.73]Researchers combined the images to provide more detail of the moon's surface.
[00:33.75]The new pictures have given astronomers1 a great deal of information about the small moon.
[00:39.52]They show areas affected2 by active volcanoes.
[00:44.20]One area clearly shows red material near the base of a mountain.
[00:50.49]Scientists say the material may be sulfur3 gases escaping along a large cut in the surface near the bottom of the mountain.
[01:00.92]They also say this release of volcanic4 material may be what helped form the mountain.
[01:08.86]The pictures provide enough information for scientists to guess at the size of several objects on the surface of Io.
[01:18.84]For example, the lengths of the shadows formed by the mountains make it possible to guess their heights.
[01:26.36]The pictures suggest that one mountain may be about eight kilometers tall.
[01:32.13]Another is about four kilometers tall.
[01:35.82]The pictures are very colorful.
[01:39.37]They show red, yellow, white and orange-black places.
[01:44.72]The surface of Io is mostly sulfur with some frozen5 sulfur dioxide.
[01:51.73]The pictures also show a mostly flat surface except for the mountains created by volcanoes.
[01:59.85]NASA scientists said the Galileo spacecraft made the pictures while working in areas with great amounts of radiation near Io.
[02:11.11]The scientists said the radiation did affect the spacecraft's computers but it did not damage them.
[02:19.73]Galileo took even closer pictures of Io on Tuesday,February twenty-second.
[02:27.83]These pictures were taken as Galileo passed as close as 198 kilometers from the moon.
[02:36.66]The newer pictures are now being sent back to Earth.
[02:41.15]They also will be released to the public as soon as scientists have studied Io is a very unusual place.
[02:51.52]Scientists say there is no evidence of holes caused by space objects on its surface.
[02:59.07]They say this means the surface of Io is much younger than one million years old.
[03:06.49]They say also that the surface of Io is always changing.
[03:11.92]The change is caused by intense volcanic activity.


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1 astronomers 569155f16962e086bd7de77deceefcbd     
n.天文学者,天文学家( astronomer的名词复数 )
参考例句:
  • Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
  • Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪,为什么只有土星有光环。 来自《简明英汉词典》
2 affected TzUzg0     
adj.不自然的,假装的
参考例句:
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
3 sulfur ps4wC     
n.硫,硫磺(=sulphur)
参考例句:
  • Sulfur emissions from steel mills become acid rain.炼钢厂排放出的硫形成了酸雨。
  • Burning may produce sulfur oxides.燃烧可能会产生硫氧化物。
4 volcanic BLgzQ     
adj.火山的;象火山的;由火山引起的
参考例句:
  • There have been several volcanic eruptions this year.今年火山爆发了好几次。
  • Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
5 frozen 2sVz6q     
adj.冻结的,冰冻的
参考例句:
  • He was frozen to death on a snowing night.在一个风雪的晚上,他被冻死了。
  • The weather is cold and the ground is frozen.天寒地冻。
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