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