名词自然选择，物竞天择说

1. 自然淘汰：1943年他们发表了一篇重要的论文,该论文阐明了:当细菌对病毒体产生抗拒,则这些抗拒态乃是由於突变(Mutation)及自然淘汰(Natural selection)而产生的.

1. (生物的)自然选择，物竞天择，适者生存
Natural selection is a process by which species of animals and plants that are best adapted to their environment survive and reproduce, while those that are less well adapted die out.

e.g. Natural selection ensures only the fittest survive to pass their genes on to the next generation.
自然选择确保只有最适应环境的物种得以存活下来，把基因传给下一代。

noun

1. a natural process resulting in the evolution of organisms best adapted to the environment

Synonym: survivalsurvival of the fittestselection