us and down和ups and downs有什么区别？

Ups and downs作为俗语就是指一个人的运气时好时坏，或是在某件事上成功和失败不断循环。换句话说，ups and downs就是起伏、波折。这是每个人都难免会遇到的。下面就是一个例子。　例句-1: Mister White sure has had his ups and downs. He's made a fortune three times and then lost it all. But he doesn't have to worry - his wife is rich. When her father died last year, she inherited two million dollars.　这句话的意思是：白先生一生经历了不少起伏。他三次发了财，可是后来又全亏损了。但是，他不用担心，他太太很有钱。去年她爸爸去世的时候，她继承了两百万美元。 而up and down 指“上上下下；前前后后；到处；来来往往”通常指实际的动作。