| 释义 | knock something on the headidiomUKinformal
 to prevent something from happening, or to finally finish something: 制止…发生;最终完成
 It's nearly done - another couple of hours should knock it on the head.快做完了——再有几个小时就搞定了。
 SMART Vocabulary: related words and phrases
 Preventing and impeding
 anti-drug
 anti-jamming
 avoid
 avoidable
 avoidably
 fireproof
 flameproof
 frustration
 guard against something
 hamper
 hang
 have someone/something hanging round your neckidiom
 preclusion
 preclusive
 prejudice
 prevent
 preventable
 scuttle
 smother
 suffocate
 
 
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