have no idea

Betty had no idea what male chauvinism was.

贝蒂道大男子主义是怎么回事。

I have no idea who this murderous fiend may be.

我道这个杀人眨眼的恶魔是谁。

I had no idea of the gaffe which I was committing.

我楚我犯了什么错误。

People who don't work in a spinnery mostly have no idea about doffing.

在纺织工厂工作的人大多理解什麽是落纱。