英语词汇“be well up in/on something”的翻译、意思、用法、释义-英汉双解词典-DIY生活网

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单词	be well up in/on something
释义	be well up in/on something be well up in/on something1 → be well up in/on something at up1(7) to know a lot about something2 → be well up in/on something at well1(14) to know a lot about a particular subjectbe well up in/on something
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