out cold -用法

out cold

unconscious；in a faint失去知觉；

陷入昏迷

A brick hit him in the head and he was out cold for half an hour．一块砖砸到了他的头，他昏迷了半小时。

They tried to lift Julie when she fell down，but she was out cold．他们想把倒下的朱丽扶起来，但她已经昏迷了。