| 单词 | knock out |
| 释义 | knock out 1．stun；render unconscious击昏 *He received a blow on the head which knocked him out．他头上被打了一拳就昏倒了。 *The falling ladder hit him on the head and knocked him out．梯子倒下来击中了他的头部，把他打昏过去了。 *The boxer knocked his opponent out．拳击运动员把对手击晕。 2．eliminate from a competition；defeat an opponent by knocking him out of the fight 从比赛中排除 *He was knocked out in the second round of this tournament．他在第2轮比赛中就被击败了。 *He has now knocked out most of the other competitors．他现在已经压倒了多数其他竞赛对手。 3．empty by knocking 磕干净 *After knocking out his pipe， the old man went on with his story．老人把烟斗里的烟灰磕干净后，又继续讲故事。 4．overwhelm with surprise使震惊；使惊得发呆 *For a moment she was completely knocked out by the news．这条消息一下子就使她惊得目瞪口呆。 *The beautiful scenery really knocks me out．这美丽的景色简直把我给迷住了。 5．play（a tune） rather unskillfully on the piano不熟练地弹钢琴 *I am not a very accomplished pianist， but I can knock out a tune．我不是一个好的钢琴演奏者，但能勉强弹奏一曲。 6．create or finish roughly or hastily粗率地或匆忙地创作成或完成 *He knocked out a plan in half an hour．他半小时就草拟出一个计划。 *She knocked out ten letters in one evening．她一个晚上写了10封信。 7．make inoperative； destroy使不能使用；破坏；损坏 *The telephone communications were knocked out by the storm．电话线被风暴摧毁了。 *The power supply system knocked out by the typhoon has been repaired．被台风刮坏的供电系统已经修复。 8．make sb．exhausted使（某人）疲劳；使（某人）累垮 *He knocked himself out with excessive work．他工作过度，把身体累垮了。 9．do one's best； exert oneself to the utmost尽最大努力；竭尽全力 *He knocked himself out cramming for the exams．他正竭尽全力赶功课准备应试。 *The workers knocked themselves out to fulfil their production quota ahead of time．工人们为提前完成生产指标，把全部气力都使上了。 |
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