the survival of the fittest

常见例句

Lily: I got it, the survival of the fittest.
我明白了。适者生存嘛。
It just shows Darwin's theory about "the survival of the fittest" is true and all creatures must be "fit" to survive'
这正好展现了达尔文“适者生存”理论的正确性，所有的生物必须‘适应环境’才能生存。”
By protecting people from the consequences of their own actions (or their own bad luck), it stopped the winnowing process that would otherwise result in the survival of the fittest.
国家保护人们免于遭受他们的行为（或者厄运）的后果，导致本该带来优胜劣汰结果的过程停止。

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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Darwinian evolution requires genetic diversity plus competition that yields the survival of the fittest.
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In past ages, the law governing the survival of the fittest roughly weeded out the less desirable strains.
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Natural selection—the survival of the fittest—requires that the unfit are allowed to fail.
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