knock out

導出

[phrasal verb]

knock (someone or something) out or knock out (someone or something)

a : to make (a person or animal) unconscious使昏迷；使失去知觉

The drug knocked him out.麻醉药使他失去了知觉。
The force of the collision knocked him out. [=knocked him cold]碰撞的力量使他晕了过去。
He hit his head against the table when he fell and knocked himself out.他倒下时头撞到桌子，失去了知觉。

b boxing : to defeat (an opponent) with a punch that knocks the opponent down for a certain amount of time（拳击赛中）击倒（对手）

— see also ¹knockout 1

c : to defeat (an opponent) in a competition so that the opponent cannot continue淘汰

My team was the favorite to win the championship, but we were knocked out (of the competition) in the third round.我的球队最有希望夺冠，却在第三轮被淘汰了。

d baseball : to cause (a pitcher) to be removed from the game by getting many hits将（投手）淘汰出局；“打掉”（投手）

The starting pitcher was knocked out (of the game) in the fourth inning.这个队的先发投手在第四局被淘汰。

knock (something) out or knock out (something)

a : to cause (something) to stop working使停止工作；使无用

b : to produce (something) very quickly快速做成

knock (yourself) out informal

a : to make (yourself) very tired by doing work筋疲力尽

They knocked themselves out trying to build a garage.他们为修个车库搞得筋疲力尽。
I knocked myself out [=I worked very hard] to get the job done on time.为了按时完成任务，我把自己累坏了。

b US — used to tell someone to go ahead and do something用于告诉某人尽管去做某事

“Do you mind if I use this exercise machine first?” “Knock yourself out.”“我可以先用一下这台健身器吗？”“尽管用。”

knock (someone) out informal : to make a very strong and good impression on (someone)给…留下好而深刻的印象；使惊叹

Her beauty just knocks me out. [=I think she is very beautiful]她的美貌令我惊叹。
Everyone was knocked out by his suggestion. [=everyone liked his suggestion very much]他的建议给每个人都留下了深刻的好印象。

— see also ¹knockout 2