automatic switching of telegraph and telephone

英 [automatic switching of telegraph and telephone]
美 [automatic switching of telegraph and telephone]

中文释义

电报电话自动交换

单词分析

单词结构：

automatic switching of telegraph and telephone

字母数：46

记忆提示

🎯 重点记忆：

  • 单词拼写：automatic switching of telegraph and telephone
  • 核心含义： 电报电话自动交换

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更新时间：2026-02-23 07:48:14