back-up copy

英 [back-up copy]
美 [back-up copy]

中文释义

[计] 副本

单词分析

单词结构：

back-up copy

字母数：12

记忆提示

🎯 重点记忆：

  • 单词拼写：back-up copy
  • 核心含义：[计] 副本

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更新时间：2026-01-27 17:27:31