英语单词“be up in”的翻译、意思、用法、释义-英汉词典

单词	be up in
释义	be up in1.■熟悉，精通：You ought to be well up in children's diseases as you have studied them for eight years.你对儿科疾病研究已有8年，按理应该很精通了。2.■[口语]熟悉；精通，擅长
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