鸟类如何利用地球磁场帮助导航迁徙-凯发k8官网

鸟类如何利用地球磁场帮助导航迁徙
文章来源:未知 文章作者:enread 发布时间:2021-09-17 01:19 字体: [ ] 
(单词翻译:双击或拖选)
鸟类如何长途跋涉,飞越海洋和陆地?科学家离揭开这个谜团又近了一步。
 
scientists studied the 1 – a familiar garden bird that can sometimes migrate – flying alone, at night and often over great distances. they identified a magnetically sensitive 2 in the bird's eye, known as a cryptochrome, that could form the basis of the in-built magnetic compass birds may use to 3.
科学家们研究了知更鸟,一种经常可以在自家花园见到的鸟类,它有时会迁徙,在夜晚独自翱翔,而且经常长途飞行。这些科学家在知更鸟的眼睛里发现了一种对磁场非常敏感的分子,被称为隐花色素。鸟类可能借助体内的磁罗盘导航,而这种隐花色素也许就是构成磁罗盘的基本元素。
 
professor peter hore at the university of 4 says it could be that birds can 'see' the earth's magnetic field, although they don't know that for sure.
牛津大学的彼得·霍尔教授说,这也许是因为鸟类可以 “看到” 地球的磁场,不过科学家们还不能完全确定这一点。
 
the researchers are planning further studies to investigate how birds, and perhaps other animals, might use this living compass in their 5 6.
研究人员正在计划进一步研究鸟类甚至其它动物是如何利用这种 “活罗盘” 来进行壮观的大迁徙的。


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1 oj7zme     
n.知更鸟,红襟鸟
参考例句:
  • the robin is the messenger of spring.知更鸟是报春的使者。
  • we knew spring was coming as we had seen a robin.我们看见了一只知更鸟,知道春天要到了。
2 y6tzn     
n.分子,克分子
参考例句:
  • a molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由p妈?f婘??妈?成的。
  • this gives us the structural formula of the molecule.这种方式给出了分子的结构式。
3 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。
4 wmmz0a     
n.牛津(英国城市)
参考例句:
  • at present he has become a professor of chemistry at oxford.他现在已是牛津大学的化学教授了。
  • this is where the road to oxford joins the road to london.这是去牛津的路与去伦敦的路的汇合处。
5 ui5zz     
n.史诗,叙事诗;adj.史诗般的,壮丽的
参考例句:
  • i gave up my epic and wrote this little tale instead.我放弃了写叙事诗,而写了这个小故事。
  • they held a banquet of epic proportions.他们举行了盛大的宴会。
6 2d162e07be0cf65cc1054b2128c60258     
n.迁移,移居( migration的名词复数 )
参考例句:
  • it foundered during the turmoils accompanying the great migrations. 它在随着民族大迁徙而出现的混乱中崩溃。 来自辞典例句
  • birds also have built-in timepieces which send them off on fall and spring migrations. 鸟类也有天生的时间感应器指导它们秋春迁移。 来自互联网
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