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

头足类或许比我们的脊椎动物近亲更早出复杂的脑部。

Some early egg-laying species gradually led to the creation of the proto-chicken which laid proto-chicken eggs.

某些早期的卵生物种逐出原型鸡，而原型鸡产下原型蛋。

Other kinds of head hair evolved as humans moved to different places.

人类移居不同的地方时，也出不同类型的头。

Isolated communities may evolve from millions of years in relative peace.

与世隔绝的动物群落可能在数百万年内出了相对稳定的生态。

Although sun bears mostly live alone, scientists recently discovered they have developed a surprising social skill.

尽管马来熊大多数时间都独自生活，但是科学家最近现，它们出了一种惊人的社交技巧。

They have independently evolved the same trick.

他们独立地出了同的把戏。

Did bats evolve flight or echolocation first, or did it evolve in tandem?

蝙蝠是先进出飞行还是回声定位，还是同时进？

What tragic dignity, for example, can be wrought into a scene like this!

像这的场面，能出何等悲壮的尊严！

I feel like I just know how to do my face in a way that I like.

我觉得我只知道如何出我喜欢的。

We have evolved a redundancy in our speech specifically that allows us to hear speech in the presence of natural sound.

我们在言语中出了一种冗余性，让我们在有大自然声音的情况下还能听到言语。

Cultures prescribe norms, evolve goals, build beliefs that help us tackle the challenges of existence.

文规定了规范， 出了目标，建立了帮助我们应对生存挑战的信念。

Because every single time that there's like, pressure on me to like, do good makeup I do really badly.

因为每次只要有人期待我出好妆容，我就会搞得一团糟。

They're some of the most bizarre things who've ever evolved on Earth.

它们堪称地球上出的 最奇特的生物之一。

And you see mammals evolved a lot of characteristics related to being able to move around at night.

你会看到哺乳动物出了许多能够在夜间活动的相关特征。

Now, but wait. If animals and humans evolved to prevent susceptibility to toxoplasma, why did DD get it?

等等，回过头来，如果动物和人会出抵抗弓形虫的能力，那为什麽DD会病呢？

Well, the secret of the Sundarbans, lies in beautiful relationships that have evolved between the most unlikely species — including the tiger.

松达班的秘密就在于，在两个最不可能的物种之间——其中之一是老虎，已经出了美妙的联系。

So insects evolved to be water repellent. For one their exoskeleton is covered with a thin layer of wax just like a car.

所以昆虫出防水功能，其中之一是它们的外骨骼包覆着一层薄薄的蜡，就像车。

Across mammalian species, hairs have been modified for numerous purposes, ranging from the soft fluff covering rabbits to the rigid quills protecting porcupines.

哺乳动物中，毛已出多种用途，从覆盖兔的柔软绒毛到保护豪猪的硬刺。

The tree has evolved to produce these hollow thorns, and they are the perfect structures for the ants to make their colonies inside.

这种树已经出了中空的荆棘，对于蚂蚁来说，这是把它们用来当做自己领地的完美结构。

While oxygen molecules have been around as long as Earth's oceans, oxygen gas didn't appear until ocean-dwelling microorganisms evolved to produce it.

虽然地球有海洋的时候就有氧分了，但要到海洋中的微生物出生产氧气的能力之后才有氧气出现。