I want you to be engaged in whatever it is that we are discussing in class.

充分参与课堂讨论。

哈佛公开课 - 幸福课课程节选

I'm part of the class obviously, but it's about you teaching each other and participating.

没错,我是课程的一部分,但你们也要参与到课堂中来

耶鲁公开课 - 博弈论课程节选