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【英语时差8,16】会发射紫外线的蜘蛛(下)

时间:2015-12-01 08:22:14

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(单词翻译)

Craig and Bernard did laboratory experiments showing that fruit flies are two to three times more likely to fly toward a simple web reflecting ultraviolet1 light than toward a web not reflecting it. Craig and Bernard also found that many spiders, especially those who forage2 near flowering plants, make non-ultraviolet-reflecting webs, then sometimes decorate the webs with special ultraviolet-reflecting silk laid down in flower-like patterns. The bodies of these spiders also reflect ultraviolet light. The two scientists observed webs built by a type of large garden spider in Panama and found that decorated webs with spiders present caught fifty-eight percent more insects per hour than undecorated empty webs.


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1 ultraviolet vlJwd     
adj.紫外线的;n.紫外线
参考例句:
  • It's called ultraviolet rays.它被叫做紫外线。
  • The sun's ultraviolet rays are responsible for both tanning and burning.阳光中的紫外线是皮肤晒黑和灼伤的根源。
2 forage QgyzP     
n.(牛马的)饲料,粮草;v.搜寻,翻寻
参考例句:
  • They were forced to forage for clothing and fuel.他们不得不去寻找衣服和燃料。
  • Now the nutritive value of the forage is reduced.此时牧草的营养价值也下降了。

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