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
- 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。 - Darwin thinks that natural selection is the chief factor in the development of species.
达尔文认为自然淘汰是物种发展中的主要因素。 - 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。 - A major implication of Darwin and Wallace's theory of natural selection is that all life forms, living and extinct, are descended from a single common ancestor.
达尔文和华莱士的物竞天择理论都蕴含一个主要的观点：即所有现存和已灭绝的生命形式都起源于同一个共同的祖先。 - 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。 - 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。 - 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。 - The development of species was the result of natural selection.
物种的进化是自然选择的结果。 - 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。 - 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。