音标:[kræk daun] ;
采取严厉措施, 制裁; 打击

crack down的用法和样例:

例句

  1. The riot police started to crack down on them.防暴警察开始对他们采取镇压行动。
【近义词】

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学英语单词
acoustic impedance density
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ammonium ferric methylarsonate
atmospheric optics
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badger game
ball nettle
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Capparis himalayensis
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free electron
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heterobaric
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isochronal flow test
Karl Theodor
knock someone off
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Lutuamian
maematopota formosana
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