英语词汇“knuckle down”的释义、用法及例句-英汉例句词典-鸿札记

词汇	knuckle down
例句	phrasal verb I'm going to have to knuckle down to some serious study. 我得开始认认真真地学习了。
随便看	courteously courtesies courtesy courtesy of somebody/something courthouse courting courtly court martial court-martial mansplains manspreading manta ray mantel mantelpiece mantids mantises mantle mantled mantles mantling man to man mantra mantrap Man U manual

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