Olive laughed and answered: "Nate,I think it is you who is going to be sick.

VOA: special.2010.01.09

And you laughed, right, and I think you're supposed to.

读的时候你们会暗暗发笑，这是应该的。

耶鲁公开课 - 现代诗歌课程节选

How many of you laughed when you saw the movie? ?

有多少人看这部电影时笑了？

耶鲁公开课 - 心理学导论课程节选

If you are happy, and work on your happiness, you are contributing indirectly to other people's happiness, just like the baby who laughed last time-- made you laugh.

你快乐并努力争取快乐，就是间直接对他人的快乐作出贡献，就像上次大笑的婴儿，把你们逗笑。

哈佛公开课 - 幸福课课程节选