theory natural selection的意思|示意

Charles Darwin, by contrast, found a lead for his theory of natural selection in the whimsical hobby of pigeon fancying, where the birds showed an enormous variety of form and behaviour.

达尔文则相反，他最初就是在放鸽子运动中通过一些特殊的习性发现了自然选择理论(鸽子奇特习性)，它们在行为方式上表现出巨大的变化。

Natural selection is a radically environmentalist theory.

自然选择是一个彻底的环保理论。

For example, not long after the events of 1848, Charles Darwin presented his theory about natural selection in Britain.

比如，1848事件后不久，查尔斯·达尔文在英国发表自然选择学说。

The theory that groups of organisms change with passage of time, mainly as a result of natural selection, so that descendants differ morphologically and physiologically from their ancestors.

主要由于自然选择的结果，生物体群经历了阶段性的变化，使后代在形态和生理上都与它们的祖先有所不同的理论。

The idea that our mental terrain decides what information survives in our heads and what gets killed off finds a parallel with a venerable biological theory: Darwin's theory of natural selection.

我们的心理地形决定了什么信息能留在我们大脑里同时什么需要剔除，这个学说和一个已经被广为接受的生物理论很近似：达尔文的自然选择理论。

On the theory of natural selection we can clearly understand the full meaning of that old Canon in natural.

根据自然选择学说，我们便可充分理解那自然史上的古老格言的意义。