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
- Genomic studies of natural variation in model organisms provide a bridge between molecular analyses of gene function and evolutionary investigations of adaptation and natural selection.
在模式生物中的自然变异的遗传学研究提供了一个在基因功能分子分析和对适应性及自然选择的进化研究的桥梁。 - 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。 - 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。 - 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。 - 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。 - It's Darwinian, the law of natural selection.
这是达尔文的自然选择规律。 - 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。 - 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。 - Mutation and speciation have usually been evolved responses to the environment and competition, with natural selection determining which new traits become widely disseminated.
通常，突变和物种形成的进化，取决于环境和竞争来，哪些新特性普遍传播则取决于自然选择。 - 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。