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单词 on and off
释义 on and off on and off  → on and off at on2(2) for short periods but not regularly over a long period of timeon and off  
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文摘网英汉双解词典包含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：2026/11/11 3:07:54