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	shammy leather shampoo shampooed shampooing shampoos shams shandies shandy shanghai shanghaied shanghaiing shanghais shank shan't shanties shanty shape shaped shapeless shapelessly shapely shapes shape-shifter shape-shifting shape up

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