back-up facility

[back-up facility]
[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