In my quiz question I asked Sam how much skin there is on an adult human body.

在我的测试问题中，我问萨姆一个成年人的身上有多少皮肤。

They have set off down the different paths that form all the structures and organs of your adult body.

它们走上了不同的道路，共同形成成年人体的所有结构和器官。

He was a child in an adult's body.

他是一个长在成人身体里的孩子。

We can find growth cycles in the bones that suggest that they took about 15 years to reach an adult body size.

我们可以发现生长骨环，这表明雷鸟花了大约15年的时间才达到成年体型。

If you laid out all the blood vessels in an adult body end to end how long would they be? Would they be a)30,000 miles b)100,000 miles or c)200,000 miles long?

如果你将一个成年人的血管首尾相连地摆放会有多长？它的长度是a)三万英里 b)十万英里还是 c)二十万英里？

Yes. So, I asked you if you laid out all the blood vessels in an adult body end to end how long would they be: 30,000 miles, 100,000 miles or 200,000 miles?

好的。我的问题是：如果将一个成年人的血管首尾相连地摆放会有多长？它的长度是a)三万英里 b)十万英里还是 c)二十万英里？

And this is maybe a little less exciting than saving infant lives, but we’re learning a lot about adult bodies too, like what’s going on when you " hit a wall" during exercise.

这可能不如拯救婴儿的生命那么令人兴奋，但我们也学到了很多关于成人身体的知识， 比如当你在运动中“撞墙” 时会发生什么。

There's no evidence that sexual orientation is determined by things like dominating mother or passive father or sex hormone levels in your adult body or your history of childhood abuse or whether your parents were gay or straight.

没有证据表明性取向是由支配性的母亲或被动的父亲或你成年后体内的性激素水平或你的童年虐待史或你的父母是同性恋还是异性恋等因素决定的。