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现在仍然活得很好。

We learn even more about stellar evolution by studying how stars die.

通过研究恒星的死亡，我们对恒星的演化有了更多的了解。

Pain of this kind is an evolutionary adaptation to rejection: a sort of early warning system to make sure you stop behavior that would isolate you.

这种痛苦是一种演化中为了适应的预警系，保你停止做出孤立自己的行为。

It's an animal that's removed from us by a lot of evolutionary distance.

它是因为很大的演化距离而跟我们脱离的动。

Physical anthropologists study the evolution of the human species.

生人类学家研究人类种的演化。

MAVEN, the Mars atmosphere and volatile evolution spacecraft.

MAVEN, 探测火星大气与挥发演化的宇宙飞船。

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。

Cephalopods may have evolved complex brains long before our vertebrate relatives.

头足类或许比我们的脊椎动更早演化出复杂的脑部。

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。

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。

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's nature's way of helping them make a quick getaway if danger comes running.

这是种演化出的生存本领，一旦遭遇危险，它们可立刻动身逃跑。

It reminded him that unforeseen factors operate in the evolution of immortality.

这使他想到，在永生不灭的演化过程中，有看不见的因素在运作。

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。

Scientists still have so many questions about the rules about how different elements and substances act and interact under different conditions; and how that might influence the evolution of planets, and their ability to foster life.

科学家们仍然有很多问题，关于不同元素和质在不同条件下如何作用和相互作用的规则；及这可能如何影响行星的演化，及它们培育生命的能力。

Mr Dodge proves more enlightening in unpicking the subsequent evolution of Iraqi politics.

Dodge 先生在揭露伊拉克政治的后续演化上十分具有启发性。

Its existence means that mammals must have evolved millions of years earlier than previously thought.

该化石的发现意味着哺乳动的演化肯定比我们之前认为的还要早几百万年。

I'm frightened of what it could be.

我害怕事情的演化结果。

We'll make more taxonomic sandwiches throughout this series to explore animals' often surprising evolutionary relationships.

本系列我们会使用更多的分类三明治去探索动那惊人的演化关系。

Cats in particular have been beneficiaries of this evolution.

猫咪尤其成为这种演化发展的受益者。