难检字字典在线查询

汉语拼音：zì rán xuǎn zé

自然界对生物的选择作用，即适者生存、不适者淘汰的现象。达尔文进化论的核心。在自然条件下，生物普遍存在变异，有利于生存的变异得到保存，不利于生存的变异被淘汰。由此可说明物种形成、生物的适应性和生物界的多样性。

自然选择 [zì rán xuǎn zé]

1. 达尔文演化论的主要内容。指生物在生存竞争中呈现「适者生存、不适者淘汰」的现象，是导致生物演化的关键因素。也作「天择」、「自然淘汰」。部分词典也译作「天择」、「自然淘汰」。

• The finding that the gene has so many effects raises the question of which one was the dominant trigger for natural selection.

  该基因有这么多方面的影响。这一发现引发了一个疑问，主要是哪方面的影响引发了自然选择？

• Darwin himself, in his autobiography, tells the story of coming up with the idea for natural selection as a classic "eureka! " moment.

  在他的自传里，达尔文讲述了自然选择的产生，作为一个典型的“发现！”

• Although it does shield people from other forces, culture itself seems to be a powerful force of natural selection.

  尽管确实为人类阻挡了其他力量，文化本身貌似是一个强大的自然选择力量。

• Just how much a process like this can be shaped by natural selection is unclear.

  仅自然选择到底能产生多少种类似进程，就仍未查明。

• But that, too, has its difficulties. Just how much a process like this can be shaped by natural selection is unclear.

  但这一说也有其困难，它在多大程度上收到自然选择的影响，目前尚不清楚。

• What he did not realize was just how seriously Germany was taking the idea of "natural selection" .

  他意识不到的是德国对“自然选择”这个想法有多认真。

• Why not copy these proven models, the engineers wondered, rather than trying to outguess 4 billion years of natural selection?

  工程师想知道为什么不复制这些行之有效的生物原型，而偏偏费力地去猜测40亿年的自然选择。

• Building on this idea, some of his colleagues argued that language is an adaptation shaped by natural selection, just like eyes and wings.

  从这个观点出发，他的同僚们也主张语言是由于自然选择而形成的适应结果，就像眼睛和翅膀一样。

• In this case, unlike that of natural selection, Darwin's thinking did not set the world alight.

  这一次，达尔文的观点并没有像自然选择学说一样，轰动世界。