Some of your response papers that you'll hand in-- " none of them are graded; they are all just graded "pass/failed"-- you'll have to hand them in and then you'll pass.

一些你们要交上来的课后论文-,都不会被打分，都只会有“及格和不及格-,你们必须交论文，然后你们就及格了。

哈佛公开课 - 幸福课课程节选