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请输入您要查询的英文单词：

　

单词 once a week/once every three months etc
分类 翻译、意思、用法、释义、英译汉、汉译英、英汉双解词典
释义 once a week/once every three months etc once a week/once every three months etc  → once a week/once every three months etc at once1(1) one time every week etc, as a regular activity or eventonce a week/once every three months etc  
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英语词典包含340727条英汉在线翻译词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

　

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更新时间：2026/5/1 7:53:55