go off基本解释
离开；消失；变差；开火

go off的用法和例句
Clumsy . Did the timer go off ?
我真笨拙定时器响了吗？

The two bombs were timed to go off together .
这两枚炸弹被定在同时爆炸。

Fearing this you go off and do everything you 've been told .
你恐惧纠结于此，便开始做你被教育去做的一切。

Are you just gonna go off like that without saying nothing ?
你打算就这样，什么也不说就走吗？

Any bells go off ?
有警钟响起来了吗？

Hear smoke alarm go off .
听到烟雾报警就去.