But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

但是，你知道，所有站在你们面前的老师,可能都会这样介绍他的课程,如果他们不那样相信着，那他们就不应该教那门课了。

麻省理工公开课 - 固态化学导论课程节选

So, I have to say, I am very excited now to introduce you to Dr. Taylor, Taylor who I would be teaching with this semester -- limited engagement -- who will tell you about some of the course policies.

才知道这个要求被允许了,所以我必须要说我，现在是十分激动的向你们介绍-,和我一起主讲的老师,她会告诉你们一些课程的相关政策。

麻省理工公开课 - 化学原理课程节选