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backing copy
backing copy
英
[backing copy]
美
[backing copy]
中文释义
[计] 备用拷贝
单词分析
单词结构:
backing copy
字母数:12
记忆提示
🎯 重点记忆:
单词拼写:backing copy
核心含义:[计] 备用拷贝
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更新时间:2026-01-24 19:35:12