n. 适者生存

词型变化：名词复数形式 : survivals of the fittest

survival of the fittest的用法和样例：

例句

Life is a deadly struggle in which only the fittest survive.生活是适者生存的一场殊死搏斗。
It stops natural selection and genetic survival dead in its tracks.大意指将会停止自然选择适者生存。

【近义词】

evolution进化
selection选择
survival幸存
natural selection[生]自然选择...

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