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
- 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。 - 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。 - 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 has tended to reduce this randomization.
自然选择往往倾向于减少这种随机化现象。 - 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 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。 - ANTIBIOTIC drugs are a well-known test of the idea of natural selection.
抗生素是对自然选择学说一个十分知名的论证。 - "Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms"( Charles Darwin).
“自然选择，特性的遗传变异和进化较慢的形式的退化”（查尔斯·达尔文）。 - It's Darwin's principle of natural selection in action.
这是达尔文的自然选择原则的行动。 - 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。