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
- 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。 - 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。 - Natural selection hardly works among the rich and the poor.
自然选择在穷人和富人之间几乎不起作用。 - 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。 - Financial history is essentially the result of institutional mutation and natural selection.
金融史实质上就是制度突变和自然选择的结果。 - 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。 - 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。 - 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。 - 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。 - 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。