upset的用法与短语

　　We risk upsetting the ecological balance of the area.

　　我们有可能破坏这个地区的生态平衡。

　　Why did you have to go and upset your mother like that?

　　你干吗非得让你母亲那样伤心呢？

　　Naturally, I get upset when things go wrong.

　　事情出了错，我当然就会很烦。