英语词汇“knuckle down”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

单词	knuckle down
释义	knuckle down phrasal verb jump to other results knuckle down (to something) (informal) to begin to work hard at something synonym get down to I'm going to have to knuckle down to some serious study.
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