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【英语时差8,16】螳螂的眼睛（下）

时间：2016-03-24 01:54:02

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（单词翻译）

There are many dung beetles2 competing for a limited amount of food at a dung pile, so when an individual is finished rolling a ball of dung it is in its best interest to make a quick escape. The fastest way to travel is in a straight path. Scientists noticed that when the moon was visible, these dung beetles did just that; they traveled in straight paths. But when it was a cloudy night, the beetles’ paths became shaky and erratic3. To be sure the beetles were indeed using the moon’s polarization and not the moon itself, the researchers used a filter that changed the pattern of the polarized moonlight by 90 degrees. The beetles responded by changing their course by 90 degrees. Scientists suspect that the dung beetle1 isn’t the only animal to navigate4 by the moon’s polarization and that more such creatures will soon be discovered.


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1 beetle QudzV     
n.甲虫，近视眼的人
参考例句：
  • A firefly is a type of beetle.萤火虫是一种甲虫。
  • He saw a shiny green beetle on a leaf.我看见树叶上有一只闪闪发光的绿色甲虫。
2 beetles e572d93f9d42d4fe5aa8171c39c86a16     
n.甲虫( beetle的名词复数 )
参考例句：
  • Beetles bury pellets of dung and lay their eggs within them. 甲壳虫把粪粒埋起来，然后在里面产卵。 来自《简明英汉词典》
  • This kind of beetles have hard shell. 这类甲虫有坚硬的外壳。 来自《现代汉英综合大词典》
3 erratic ainzj     
adj.古怪的，反复无常的，不稳定的
参考例句：
  • The old man had always been cranky and erratic.那老头儿性情古怪,反复无常。
  • The erratic fluctuation of market prices is in consequence of unstable economy.经济波动致使市场物价忽起忽落。
4 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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