OK, not a quiz for points or anything, don't freak out, but I do want you to tell me who these people are. So, what about this person?

我们的课程将由一个小测试开始，别紧张，这不记录分数的,但我希望你们能告诉我这些人是谁？

麻省理工公开课 - 化学原理课程节选

Try not to be intimidated by these microphones, they're just mikes. It's okay.

它们只不过是麦克风而已,别紧张

耶鲁公开课 - 博弈论课程节选

So perhaps take some comfort from that.

所以说，放轻松点，别紧张。

哈佛公开课 - 计算机科学课程节选

Yeah, stand up a second, if that's okay.

没错,请站起来回答一下,别紧张

耶鲁公开课 - 博弈论课程节选