What I would say about this one, cause it's most complicated, I would say, in the history of humanity.

我会说，因为,是非常复杂的，我会说，是整个人类史上最复杂的。

普林斯顿公开课 - 人性课程节选

The average relationship in human history is one in which the woman is subjugated.

人类史上的普通恋爱关系,其一是女人是被压制的一方。

哈佛公开课 - 幸福课课程节选

What's the average relationship in human history?

人类史上的普通恋爱关系是指什么？

哈佛公开课 - 幸福课课程节选

That's the average relationship in human history.

这就是人类史上的普通恋爱关系。

哈佛公开课 - 幸福课课程节选