Natural selection is the cornerstone principle of evolution.

物竞天择说是进化论的基础原则。

Natural selection rewarded our ancestors for collaboration, and for forming connections with each other.

在物竞天择中，我们的祖先互相合作，并且建立彼此的关系而存活下来。

Natural selection might be expected to favour the progeny of men who enjoy bringing them up.

自然选择也许更偏爱那些乐于带孩子男人的后代。

Natural selection hits on a good design.

自然选择的图案都是最好的。

Natural selection? You mean, the principle behind evolution?

自然选择？你是说进化背后的观点？

Natural selection contributes to the basis of Darwin's theory of evolution.

自然选择为达尔文的进化论打下了基础。

Natural selection can happen on many levels, and there can be evolution inside of evolution.

自然选择可以发生在许多层面上，并且在进化过程中也可以有进化。

Natural selection has shaped all organisms to have special states to cope with certain kinds of circumstances.

自然选择使所有生物体具有特殊状态以应对特定环境。

We've created the next chapter in natural selection.

我们创造了自然选择新的篇章。

I believe in Darwin's theory of natural selection.

我相信达尔文的自然选择理论。

Well, anxiety may be a result of natural selection.

好吧，焦虑可能是自然选择的结果。

The one we know best is Darwinian natural selection.

其中最广为人知的理论之一就是 达尔文的自然选择论。

To answer this question, it helps to understand natural selection.

回答了这个问题，有助于理解自然选择。

But the second force, natural selection, is definitely not random.

但第二种力量——自然选择——绝对不是随机的。

This means that we are the result of natural selection.

这意味着我们是自然选择的结果。

A says natural selection explains how species change gradually over time.

A 说自然选择解释了物种如何随着时间逐渐变化。

Natural selection at its core requires the ability to to adjust and adapt to new environments as they're presented to you.

自然选择的核心要求你有能力调整和适应新的环境。

And that is something natural selection can work with.

这是自然选择可以做到的。

If natural selection were to work, some alternative, unconsidered mechanism was required.

如果自然选择要起作用的话，就得需要某种尚未发现的替代机制。

Charles Darwin is famous for describing evolution by natural selection.

查尔斯·达尔文因通过自然选择描述进化而闻名。