“天择”是个多义词，它可以指天择（crazyman演唱原创歌曲）, 天择（卷土所著玄幻小说）。
物竞天择确保只有最适应环境的物种才得以生存下来，把基因传递给下一代。
Natural selection ensures only the fittest survive to pass their genes on to the next generation.
经过数千年的物竞天择，这些特征延续至今。
Through natural selection over thousands of years, these characteristics continue to the present day.
达尔文所理解的也就是自然选择，物竞天择。
All Darwin perceived was that selection must work in nature, too.
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