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toll-switching system
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 13:00:08