But each of those lineages evolved independently of each other.

但每个世系都是独立演化的。

And that creates an interesting problem in understanding planetary evolution.

引出了一个关于行星演化的有趣问题。

How did Earth form and evolve?

地球是如何形成和演化的？

The ever-evolving illicit drug trade is shifting to a new paradigm.

不断演化的非法毒品贸易正转变为一种新范式。

It was the largest and most realistic simulation of the growth of cosmic structure.

它是最大型且最接近现实的关于宇宙演化的模拟。

MAVEN, the Mars atmosphere and volatile evolution spacecraft.

MAVEN, 探火星大气与挥发物演化的宇宙飞船。

The images offer new information on star formation, galaxy structure and evolution.

这些图像提供了关于恒星形成、星系结构和演化的新信息。

One reason for the improvement in sentiment is the Fed's evolving monetary-policy stance.

投资者信心改善的原因之一就是美联储逐步演化的货币政策立场。

And again, that is an evolved way in which the larynx has developed to allow us to do it.

这同样也是演化的结果，喉头演化发展成让我们能够这么做。

Cats in particular have been beneficiaries of this evolution.

尤其成为这种演化发展的受益者。

Although Marsh named more species than Cope, both men greatly expanded our understanding of evolution.

虽然马许命名的物种比柯普多，两个人都大大拓展了我们对于演化的了解。

This has profound implications for cosmology and has shaped our understanding of the universe's composition and its evolution.

这对宇宙学具有深远的影响，并塑造了我们对宇宙构成及其演化的理解。

Equids originally evolved in North America.

马科动物最初是在北美演化出来的。

I'm frightened of what it could be.

我害怕事情的演化结果。

Hawaii's 20 surviving species of honey creeper also evolved from just a few individuals.

夏威夷有20种幸存的吸蜜鸟，也是从少数个体演化而来的。

Judging is an evolutionary trait, something we needed for our survival.

评断是一种演化上的特性， 有时我们需要它才能够生存。

And our brain has come to us through the enormity of the deep sweep of time.

而我们现在所演化而成的大脑历经了时间的巨轮。

Physical anthropologists study the evolution of the human species.

生物人类学家研究人类物种的演化。

What it doesn't show is the next stage. How stars hatch from EGGs.

但是没有展示出初始阶段的下一阶段——恒星是如何从EGGs演化出来的。

Trilobites have no direct descendants, but their evolutionary cousins are alive and well.

三叶虫没有直系的后代，但它们在演化上的表亲现在仍然活得很好。