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bone up 主要翻译 bone up vi phrasal slang (revise knowledge)复习；临阵磨枪You've got just three days left before the exam; time to bone up! bone up on [sth] vi phrasal + prep slang (revise knowledge of)复习；温习If you're going to be that picky, I'd better bone up on basic grammar. bone up on [sth] vi phrasal + prep slang (learn about) (考试前)突击背诵，突击学习，为…临阵磨枪The students boned up on psychology terms before the exam. |