People should feel free to correct my arithmetic because it's often wrong; 90 right? Two-thirds of 90, whoops, what do I need, start again.

我要是算错了要提醒我,我总算错,90对吧,90的2/3,我说错了

耶鲁公开课 - 博弈论课程节选

I'm going to look desperately at my T.A.'s to make sure I didn't screw that up.

我得问问助教们,检查一下我是否算错了

耶鲁公开课 - 博弈论课程节选

And again, anytime I'm doing algebra on the board, someone should check me at home, so just have a quick look at that. Is that right?

还有,每回我在黑板上演算,你们都帮我检查一下,看看有没有算错,这次算对了吗

耶鲁公开课 - 博弈论课程节选