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automatic block signal
automatic block signal
英
[automatic block signal]
美
[automatic block signal]
中文释义
自动闭塞信号机
单词分析
单词结构:
automatic block signal
字母数:22
记忆提示
🎯 重点记忆:
单词拼写:automatic block signal
核心含义:自动闭塞信号机
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更新时间:2026-03-21 04:59:06