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
- Viruses have genes, can reproduce and are subject to the evolutionary pressures imposed by natural selection.
病毒有基因，能再生，需要应对自然选择的进化压力。 - It's Darwinian, the law of natural selection.
这是达尔文的自然选择规律。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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 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。 - 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。