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natural selection

英 [ˌnætʃrəl sɪˈlekʃn]

美 [ˌnætʃrəl sɪˈlekʃn]

n.  自然选择; 物竞天择

医学

牛津词典

    noun

    • 自然选择;物竞天择
      the process by which plants, animals, etc. that can adapt to their environment survive and reproduce, while the others disappear

      柯林斯词典

      • N-UNCOUNT (生物的)自然选择,物竞天择,适者生存
        Natural selectionis 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.
        1. 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。

      英英释义

      noun

      双语例句

      • His theory of natural selection is based on the principle of the survival of the fittest.
        他的自然选择理论就是基于适者生存的原则。
      • Again, differences between people and the opportunity for natural selection to take advantage of it have diminished.
        人与人之间的差异和利用差异进行自然选择的机会再一次失去。
      • Natural selection is a slower process with man than with any other creature.
        自然选择对人类比起对其他生物是个较为缓慢的过程。
      • Living creature adapting to its environment is one of natural selection's results.
        生物对环境的适应,是自然选择的结果之一。
      • A theory of organic evolution claiming that new species arise and are perpetuated by natural selection.
        主张新品种在自然中物竞天择的有机进化论。
      • Natural selection tends to maintain a mutation rate for maximal evolvability.
        自然选择倾向于保持一个使可进化性最大化的基因突变率。
      • I am convinced that natural selection has been the main but not the exclusive means of modification.
        我确信自然选择是主要的但不是唯一的手段。
      • Nature grants long periods of time for the work of natural selection.
        自然界允许极长的时期,给自然选择来进行它的工作。
      • 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。
      • But the context of natural selection defines the narrow limits of the argument that Friedman and savage developed.
        但自然选择这个大背景,限定了弗里德曼和萨维奇所提论点的狭小适用范围。