upper quadrant single-arm semaphore signal

英 [upper quadrant single-arm semaphore signal]
美 [upper quadrant single-arm semaphore signal]

中文释义

上向单臂板信号机

单词分析

单词结构：

upper quadrant single-arm semaphore signal

字母数：42

记忆提示

🎯 重点记忆：

  • 单词拼写：upper quadrant single-arm semaphore signal
  • 核心含义：上向单臂板信号机

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更新时间：2026-02-05 02:23:47