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score a knockout
The boxer scored a knockout in the third round.
拳击手在第三轮击倒对手获胜。
击倒；KO
先理解核心含义，再看它在真实句子里的用法。
击倒；KO
In boxing and other combat sports, a hit that makes the opponent unable to get up within a counted period.
The boxer scored a knockout in the third round.
拳击手在第三轮击倒对手获胜。
常缩写为 KO。
使人失去知觉或至少在一定时间内无法站起来的行为；技术性击倒。
The act of making one unconscious, or at least unable to come back on one's feet within a certain period of time; a TKO.
任何事物的停用。
The deactivation of anything.
部分打孔的开口,供以后选择性移除。
A partially punched opening meant for optional later removal.
特定基因的停用。
The deactivation of a particular gene.
The heavyweight champion secured a knockout in the second round, ending the fight instantly.
这位重量级拳王在第二回合击倒对手，立即结束了比赛。
Everyone at the party thought she was an absolute knockout in that elegant dress.
派对上所有人都觉得她穿着那件优雅的连衣裙美极了。
The unexpected plot twist was a knockout, leaving the audience speechless.
出乎意料的情节转折令人震撼，让观众目瞪口呆。
The boxer scored a knockout in the third round.
拳击手在第三轮击倒对手获胜。
He delivered a knockout with his powerful right hand.
他用有力的右手击倒了对手。
knockout 在此作定语，修饰名词。
His knockout punch was devastating.
他的击倒性一拳非常可怕。
Not this
He knockout his opponent easily.
Use this
He knocks out his opponent easily.
knockout是名词，不能直接用作动词。表达'击倒某人'时，应使用动词短语'knock out'，并根据主语人称和时态变化。
Not this
She is knockout in that dress.
Use this
She is a knockout in that dress.
当knockout作名词表示'令人倾慕的人'时，为可数名词，前面应加冠词'a'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
技术性击倒（TKO）
The referee stopped the fight and declared a technical knockout.
裁判终止了比赛，并判定为技术性击倒。
击倒性打击
The champion lost after a devastating knockout blow in the final round.
冠军在最后一回合遭到一记毁灭性的击倒性打击而落败。
基因敲除
Researchers used a gene knockout to determine the gene's function.
研究人员利用基因敲除来确定该基因的功能。
基因敲除小鼠
The knockout mouse showed no obvious change in behavior.
基因敲除小鼠在行为上没有表现出明显变化。
淘汰赛轮次
The team was eliminated in the first knockout round.
该队在首轮淘汰赛中被淘汰。
决定性一击；致命打击
The new evidence was the knockout punch in the trial.
新证据是审判中的决定性一击。
击倒性打击；致命挫折
Losing his job was a knockout blow to his confidence.
失去工作对他的自信心是致命一击。
Use knockout naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 knock（敲）和 out（出）连起来：想象一拳把对手“敲出”赛场，瞬间倒地，就是击倒（KO）或淘汰。
语域：neutral 常见场景：boxing、sports commentary 在拳击语境中，knockout 通常用于中性场合，体育报道和日常谈论比赛都比较常见；正式文体中可选用 technical knockout 这类更完整的说法。
out、shout、about、without、doubt 都与 knockout 结尾的 /aʊt/ 押韵；doubt 中的 b 不发音。knock 拼写与 knockout 前半相同，但读 /nɒk/，不与 -out 押韵。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.