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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。