n.疯子；精神病患者
No one wanted to listen to a madman. 没有人想听疯子讲话。
He stumbled down the stairs like a madman. 他像狂人般地跌跌撞撞地走下了楼。
The madman was confined in case he attacked anyone . 这个疯子被关了起来以免伤人。
