Darwin thinks that natural selection is the chief factor in the development of species.

This shift is rapid and does not depend on natural selection.

这种变迁的过程很快而且并不取决于自然选择.

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.

Natural selection is a grim natural reaper.

自然选择是自然界冷酷的死神.

Something like the theory of Natural Selection explains why some people are homeless.

类似适者生存的理论可以解释为什麽有些人无家可归.

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.

Complex structures and behaviour such as eyes and language are undoubtedly the product of natural selection.

复杂的结构和行为,例如眼睛和语言毋庸置疑是自然选择的产物.

Abelson, 27, calls it " Natural Selection Speed Date II: Sugar Mamas & Boy Toys. "

27岁的阿贝森称之为 “ 自然选择速配二代: 甜心老妈 & 小情人 ”.

Produced in China, after of years of natural selection and formation of a natural cat species.

产于中国, 是经过千百年的自然淘汰而形成的自然猫种.

Natural Selection Protected Some Asian Populations From Alcoholism, Study Suggests. Science Daily. Alcohol Reports.

自然选择保护一些东亚群体免于酒精中毒, 一研究发现. 科学日报. 酒精报道.

Why should it prevail against natural selection?

它为什么要阻止自然选择 呢 ?

Rudimentary organs, from being useless, are not regulated by natural selection, and hence are variable.

残留的器官, 因为无用而不受自然选择所控制, 也容易变异.

Darwin didn't offer a concrete mechanism by which his proposed natural selection would take place, either.

达尔文对于自己提出的自然选择如何发生也没能提供某种具体机制.

Evolving through natural selection is about time and numbers.

通过自然选择进化讲述的是时间和数量的故事.

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.

The theory of natural selection provides an explanation of the evolutionary process.

物竟天择论解释了这一进化过程.

Does natural selection only work on physical or it also work on mental as well?

物竞天择理论究竟是只在自然物质方面起作用呢还是也在精神方面起作用?

All base their arguments on the same tenets of natural selection.

上述三种论点的依据都是自然选择理论.

The natural vegetation succession is a major means of ecological rehabilitation in Karst area.

植被的自然演替是岩溶地区生态重建的主要方式.

The community of natural vegetation affected by climate and site conditions is simple and fragile.

天然植被的生态群落受气候和立地条件的影响简单而脆弱.

Ditch your mountain aided downstream , thick forests, and the original natural vegetation.

坝下贵沟山峰回路转, 林木蓊郁, 有原汁原味的天然植被.