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
- 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。 - 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 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。 - It's Darwinian, the law of natural selection.
这是达尔文的自然选择规律。 - 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。 - Natural selection is a process in which genetic changes that are helpful to a species survive and spread quickly.
所谓的自然选择是一个过程，在此过程中基因将沿着有利于物种生存的方向进化并且快速繁衍开来。 - 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。 - 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。 - 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。 - 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。