If you decide to opt in by a pass fail, I just need to sign your white study card or if you wanna decide before the 5th Monday, just grab the pink slip and I can sign that and you can turn that in at any point and I'm happy to chat during break today or after class if you have any questions or concerns.

如果你上我们的课程只是要一个分数，那么我只需要在你的白卡片上签个名就可以了,或者说，如果在第五周的周一前还没考虑好，把你的解聘书拿来，只要我签个字,任何时候你都开以离开我的教室,当然，如果你有任何问题和疑虑,我也很高心和大家做课下交流。

哈佛公开课 - 计算机科学课程节选

If you have any questions, anything that's not clear, if you agree or disagree with something, email me or email your TF and we'll always respond.

如果你有任何问题或不明白的地方，如果你同意或反对什么观点，请给我或助教写邮件,我们一定会回复的。

哈佛公开课 - 幸福课课程节选