来自《耶鲁大学开放课程：心理学导论 第10集 第10集》

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  And this variation gives rise to different degrees
  这个差别对生存和繁殖
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  of survival and reproduction
  产生不同影响
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  and gets passed on from generation to generation
  并一代代传下去
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  and gives rise to adaptations,
  进而影响对环境的适应
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  What Darwin described as
  达尔文把这描述为
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  "that perfection of structure that justly excites our imagination."
  恰好激发我们想象力的完美结构
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  And the biological world has all sorts of examples.
  生物世界里到处都是这种例子
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  You look at camouflage.
  比如伪装
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  Prior to Darwin one might imagine that
  达尔文之前的人会认为是
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  some intelligent creator crafted animals
  某个智慧的创造者赋予了动物们
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  to hide from their prey.
  躲避猎食者的能力
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  But now we have a different alternative,
  但是现在我们对此有不同的解释