In fact one of the frankly best things I ever did as an undergraduate was, perhaps fittingly, take this course pass-fail.

实际上我上本科时做的最得意的事,恰当地说，就是把这门课的成绩看成及格和不及格两种。

哈佛公开课 - 计算机科学课程节选

So you may take this course ultimately via pass-fail or letter grade and I am more than happy to chat with you about the implications and to sign any paper work such as the stack here that you might need.

你可能希望这门课采用及格-不及格分制或者分数制,我很乐意跟你聊下,两个打分制各自的含义,也可以帮你在这里签到。

哈佛公开课 - 计算机科学课程节选

A word about grades-- you may in fact take this course pass-fail.

关于分数我有两句话要说，这门课只分及格和不及格两种。

哈佛公开课 - 计算机科学课程节选