星期五就要考试了，但我的心里任然空落落的，不知复习好了没有，能考多少分心里也一直没有一个底。我真想考一个好一点的分数，但毕竟是要通过努力才能达成的，好好学习吧！

Friday will examine, but my in the mind allows however gets empty to fall of, don't know to review good have no, can test how much divide attention in also has been have no a bottom.

youdao

I got the feeling, when I was talking to some of you guys, that maybe you should brush up on your calculus.

当我和你们中某些人聊天时,我感觉到,你们应该好好复习微积分

耶鲁公开课 - 基础物理课程节选