专业字典>英语词典>natural selection翻译和用法

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

      • 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。
      • 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。
      • 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。
      • He concluded that these expressions evolved through natural selection.
        他得出结论,这此表达方式经自然选择演变而来。
      • Natural selection has tended to reduce this randomization.
        自然选择往往倾向于减少这种随机化现象。
      • 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。
      • Viruses have genes, can reproduce and are subject to the evolutionary pressures imposed by natural selection.
        病毒有基因,能再生,需要应对自然选择的进化压力。
      • Whether speciation is achieved normally via genetic drift or natural selection is the subject of much ongoing discussion.
        究竟正常的物种形成是通过遗传漂变还是通过自然选择达到的,是现在正在进行热烈讨论的话题。
      • Natural selection hardly works among the rich and the poor.
        自然选择在穷人和富人之间几乎不起作用。
      • Variation within a species is the raw material upon which natural selection acts.
        物种内部的变异是自然选择起作用的原始的生理现象。