We laugh when there is incongruity between what we expect and what we actually--what actually happens unless the outcome is frightening."

当我们的期望和现实发生的事实,之间出现不一致时，我们就会笑,除非这种不一致引起恐惧”

耶鲁公开课 - 心理学导论课程节选

They say it, so that we don't have to and we laugh our heads off.

他们说出来了，我们就不用说了，我们只管笑掉大牙。

街上的售票员 - SpeakingMax英语口语达人

If he splits his head open and there's blood everywhere, I'm less likely to laugh unless I don't like him or something.

如果他摔个头破血流，我就笑不出，除非我很讨厌这个人。

耶鲁公开课 - 心理学导论课程节选

See this happens every semester that the chuckles, the grimaces, kind of roll through the crowd as people catch on, but there you go.

每学期学生们看到这，就会偷笑或者做鬼脸之类的，不过你们随意。

哈佛公开课 - 计算机科学课程节选

Within 20 degrees of separation from you initial smile to the three people, the entire world will be smiling.

只需要20度的分隔,从你用笑容感染三个人开始，全世界就会笑起来。

哈佛公开课 - 幸福课课程节选

It's mock aggression in the sense that when people laugh they're often teasing, kidding around.

我们知道打闹是装出来的，因为人一笑,我们就知道他们是闹着玩的。

耶鲁公开课 - 心理学导论课程节选

I got interested in this--well, I got interested in this as a developmental psychologist watching my own children laugh and trying to figure out what it is that made them laugh.

我对笑感兴趣…,身为一个长成心理学家,当我看到我孩子笑时，我就对这个议题感兴趣了,我想弄明白是什么令他们笑的。

耶鲁公开课 - 心理学导论课程节选