approach obstruction signal

英 [approach obstruction signal]
美 [approach obstruction signal]

中文释义

遮断预告信号机

单词分析

单词结构：

approach obstruction signal

字母数：27

记忆提示

🎯 重点记忆：

  • 单词拼写：approach obstruction signal
  • 核心含义：遮断预告信号机

最近查询：

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更新时间：2026-02-06 03:08:16