The reason I tell you this is that I don't want people feeling that, well, the paper is going to start to decompose or something if I don't get to him by 5:00 today.

我给你的解释是,我不想让人感到，试卷开始变质,或是我不能在今天五点前和他见面。

麻省理工公开课 - 固态化学导论课程节选