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單詞乎

knuckle down

knuckle down是什么意思、knuckle down怎么讀

knuckle down漢語翻譯

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knuckle down英語解釋

動詞 knuckle down:

  1. work very hard, like a slave
    同義詞：slave, break one's back, buckle down

knuckle down例句

  1. If you want to pass that exam, you'll have to knuckle down (to some hard work).
    你要想考試及格，就得開始下功夫(苦干)了。
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