natural selection
英 [ˌnætʃrəl sɪˈlekʃn]
美 [ˌnætʃrəl sɪˈlekʃn]
n. 自然选择; 物竞天择
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.- 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。
- Natural selection ensures only the fittest survive to pass their genes on to the next generation.
英英释义
noun
- a natural process resulting in the evolution of organisms best adapted to the environment
双语例句
- 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。 - 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。 - 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 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。 - 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。 - 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。 - In this case, natural selection would tend to add to the stature of the plant.
在此种情况下，自然选择就有增加植物高度的倾向。 - 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。 - Our results provided evidence of divergent evolution of congeneric orchids under natural selection.
我们的结果为同源兰科植物在自然选择下的趋异进化提供了证据。