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单词 be on/off duty
释义 be on/off duty be on/off duty  → be on/off duty at duty(1) to be working or not working at a particular time, especially when you are doing a job which people take turns to do, so that someone is always doing itbe on/off duty  
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英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。

　

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更新时间：2026/7/16 12:18:52