keep a copy of

英 [keep a copy of]
美 [keep a copy of]

中文释义

na. 留副本

单词分析

单词结构：

keep a copy of

字母数：14

记忆提示

🎯 重点记忆：

  • 单词拼写：keep a copy of
  • 核心含义：na. 留副本

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更新时间：2026-01-30 15:10:22