When he laughed, was witty, in a merry humor, one could scarce sees his eyes, and by and by, when he was serious and positive, he opened his eyes round.

当他笑时，他是睿智的，带有令人愉快的幽默，都看不见他的眼睛了，不一会儿，他变得严肃和积极了，便圆睁着眼睛。

耶鲁公开课 - 政治哲学导论课程节选

This is how Dean talks at the very end: He couldn't talk anymore. He hopped and laughed.

这就是最后迪安讲的话：,他一边走，一边笑。

耶鲁公开课 - 1945年后的美国小说课程节选

He decided to send himself and his students to different places including shopping malls and observe when people laughed and write down what made them laugh.

除了他自己，他还派他的学生,去各种各样的地方，包括购物商场,观察人们在什么时候会笑,并写下让他们笑的原因。

耶鲁公开课 - 心理学导论课程节选

He was laughed at. He was derided.

被人嘲笑着，被人嘲弄着。

麻省理工公开课 - 固态化学导论课程节选