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

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.

The natural vegetation is well developed in forest landscape area, Great Xing an Range.

大兴安岭地区为森林景观区, 植被十分发育.

Destrucion of forests and natural vegetation leads to soil erosion.

破坏森林和自然植被导致水土流失.

Mickey: Shit, man, I m a natural born killer.

米基: 该死的, 老兄, 我是个天生的杀人狂.

Natural-born heroes , Ariens make great soldiers, police officers and rescue workers.

天生就想当英雄的白羊座人适合当兵 、 察或营救人员的工作.

Some people seem to be natural-born troublemakers.

有的人看起来是天生的捣乱者(或:惹事生非者).

The same principle is seen in the naturalisation of plants through man's agency in foreign lands.

经人类的作用而使植物在异地归化的情况,亦属于同样原理.

Sister Carrie has been considered as a masterpiece of American Naturalism.

《嘉莉妹妹》一直被视为美国自然主义流派的一部杰作.

Yet to discuss the novel as an example of naturalism is to miss its mood.

如把这部小说当作自然主义作品的范例来看待,那就误解了它的情调.

One who believes in and follows the tenets of naturalism.

自然主义者信仰和追随自然主义信条的人.

It was part of the art movement toward naturalism in design.

这是走向自然主义的设计艺术运动的一部分.

Naturalism is the focused and difficult problem in the English Literature of ethnic cultural heritage tourism.

原真性是民族文化遗产旅游英文文献中的热点与难点问题.