knock sb out是什么意思（包括原意和引申义）

1.To knock someone out means to cause them to
become unconscious or to go to sleep.使失去知觉; 使昏昏欲睡
例：The three drinks knocked him out.
这3杯酒让他昏昏欲睡.
2.If a person or team is knocked out of a competition,
they are defeated in a game,so that they take no more part in the competition.
淘汰
例：He got knocked out in the first inning.
他在第1局就被淘汰了.
格斗类游戏有人被淘汰了说 K.O.就是knock out 的缩写,经典的拳皇就用 K.O.