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manual telephone exchanging system

英 [manual telephone exchanging system]
美 [manual telephone exchanging system]

中文释义

人工电话交换制

单词分析

单词结构:

manual telephone exchanging system

字母数:34

记忆提示

🎯 重点记忆:

  • 单词拼写:manual telephone exchanging system
  • 核心含义:人工电话交换制

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更新时间:2026-02-04 19:24:01

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