survival of the fittest

常见例句

If evolution is survival of the fittest, nature red in tooth and claw, how could animals evolve moral feelings?
如果进化论是讲适者生存，在弱肉强食的自然界，动物怎么能进化出道德情感？
Years ago, people tended to see evolution as a competition for survival of the fittest. But now there is more emphasis on the gentler virtues.
数年前，人们倾向于把进化看作是一种竞争，适者生存的竞争，但现在更加地强调温和的美德。
Herbert Spencer, in the decade after Darwin, summarised natural selection as "survival of the fittest" – a slogan Darwin only later adopted.
十年之后，赫伯特·斯宾塞将达尔文的自然选择概括为“适者生存”——达尔文只是后来采用了这个口号。

The British philosopher Herbert Spencer described this struggle as "survival of the fittest."
If evolution is survival of the fittest, nature red in tooth and claw, how could animals evolve moral feelings?
如果进化论是讲适者生存，在弱肉强食的自然界，动物怎么能进化出道德情感？
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Survival of the fittest means survival of those best able to adapt to changing circumstances.
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Darwinian evolution requires genetic diversity plus competition that yields the survival of the fittest.
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From civilization built on mutual survival to survival of the fittest in its rawest, ugliest form.
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