Every day is not Sunday. 好景不常在。

英语谚语类

比喻好运或美好的事物并不会一直持续下去，人生总会有起伏和变化。
上一篇：Everybody's business is nobody's business. 人人负责，等于没人负责。
下一篇：Every dog has his day. 谁都有得意的时候。