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back-up facility
back-up facility
英
[back-up facility]
美
[back-up facility]
中文释义
[计] 后备设施
单词分析
单词结构:
back-up facility
字母数:16
记忆提示
🎯 重点记忆:
单词拼写:back-up facility
核心含义:[计] 后备设施
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更新时间:2026-03-14 00:34:07