busy tone signal
查询英语单词中文释义、音标、发音和例句。
busy tone signal
英
[busy tone signal]
美
[busy tone signal]
中文释义
占线信号
单词分析
单词结构:
busy tone signal
字母数:16
记忆提示
🎯 重点记忆:
- 单词拼写:busy tone signal
- 核心含义:占线信号
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更新时间:2026-09-21 08:50:55