toll-switching system

英 [toll-switching system]
美 [toll-switching system]

中文释义

= trunk exchange

单词分析

单词结构：

toll-switching system

字母数：21

记忆提示

🎯 重点记忆：

  • 单词拼写：toll-switching system
  • 核心含义：= trunk exchange

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更新时间：2026-02-02 17:58:22