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单词 survival of the fittest
释义

WordReference Random House Unabridged Dictionary of American English © 2024
survival of the fittest, 
    1. Biology(not in technical use) natural selection.
    2. Biologya 19th-century concept of human society, inspired by the principle of natural selection, postulating that those who are eliminated in the struggle for existence are the unfit.
    • 1860–65

Collins Concise English Dictionary © HarperCollins Publishers::
survival of the fittest n
  1. a popular term for natural selection
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