knock out
phrasal verbknock somebody out
- to make somebody go to sleep or become unconscious
使入睡；使昏睡；使不省人事 - The blow knocked her out.
这一击把她打昏了。
- The blow knocked her out.
- (in boxing
拳击运动 击倒（获胜） - (informal) to surprise and impress somebody very much
使大吃一惊；使倾倒；给某人留下深刻印象 - The movie just knocked me out.
这电影着实令我赞叹不已。
- The movie just knocked me out.
knock somebody/yourself out
- to make somebody/yourself very tired
使筋疲力尽；使疲惫不堪 - Why knock yourself out for little income?
为什么要为了一点点收入而累垮自己？
- Why knock yourself out for little income?
knock somebody out (of something)
- to defeat somebody so that they cannot continue competing
把…淘汰出（比赛） - England had been knocked out of the World Cup.
英格兰队已被淘汰出世界杯足球赛。
- England had been knocked out of the World Cup.
knock something out
- (informal) to produce something, especially quickly and easily
完成；快速而轻易地做成 - He knocks out five books a year.
他一年轻松写出五本书。
- He knocks out five books a year.
knock yourself out
- (informal) to go ahead and do what you want
把…淘汰出（比赛） - You guys go and have fun. Knock yourselves out.
你们去玩吧。请自便。 - If you like something and can afford it, I say knock yourself out.
如果你喜欢某样东西，又买得起，我说你自己敲吧。
- You guys go and have fun. Knock yourselves out.