Now, I've got to tell you, for those of you who have not seen this movie, I'm about to spoil it. All right?

我先申明,没有看过这部电影的同学们,我要剧透了,好吧

耶鲁公开课 - 死亡课程节选

Well done, though, class.

做得好，同学们。

哈佛公开课 - 计算机科学课程节选

Good morning,everyone.

早上好，同学们。

哈佛公开课 - 幸福课课程节选