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单词 be well up in/on something
分类 翻译、意思、用法、释义、英译汉、汉译英、英汉双解词典
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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更新时间：2026/10/9 12:28:38