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趣味青春英语电台 第41期:Lose your marbles

时间:2015-08-13 02:19来源:互联网 提供网友:mapleleaf   字体: [ ]
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    (单词翻译:双击或拖选)

   Idiom:

  Lose your marbles ( go crazy )
  Hit the book:
  The experiments by some scientists tell us that bats use the sunset to calibrate1 the Earth's magnetic field for use as a compass. But the story may be still more complicated. In birds, it's not the sun itself that is responsible for this calibration, but the polarised light it creates in the atmosphere as it sets.
  While GPS tracking is widely used on birds, it is much rarer on bats, partly because most bats are too small to carry even lightweight devices. However, Yossi and Ivo have arrived with GPS trackers weighing just 3 grams - the lightest ever built.
  The trouble with these devices is we need to recapture the same bat in order to recover the data. But we have recovered 19 of 24 of these devices so far, and although the data are preliminary, they are also exciting. Soon we may know as much about bat navigation as we do about how birds find their way around. In essence we'll no longer be in the dark about the way these fascinating animals navigate2.

点击收听单词发音收听单词发音  

1 calibrate vTvyu     
校准;使合标准;测量(枪的)口径
参考例句:
  • Pesticide levels in food are simply too difficult to calibrate.食品中杀虫剂的含量很难精确测定。
2 navigate 4Gyxu     
v.航行,飞行;导航,领航
参考例句:
  • He was the first man to navigate the Atlantic by air.他是第一个飞越大西洋的人。
  • Such boats can navigate on the Nile.这种船可以在尼罗河上航行。
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TAG标签:   趣味  青春英语
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