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

But in any case, it is a profit, but it's no good if it's going to spoil.

不管怎么说,你都能从中获利,总比放着变质的好

耶鲁公开课 - 古希腊历史简介课程节选

Expire Okay, that's a very interesting issue about the--the response was that because the--other food might expire quickly and so that's true; if you're eating things like fruits and vegetables, they only have a certain amount of life before they go bad.

保质期长,这是个很有趣的问题,因为其他食物可能很快就变质了,这也是个原因,如果你吃蔬菜水果的话,它们都有一定的保质期

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选