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upper quadrant semaphore signal
upper quadrant semaphore signal
英
[upper quadrant semaphore signal]
美
[upper quadrant semaphore signal]
中文释义
向上臂木号志机
单词分析
单词结构:
upper quadrant semaphore signal
字母数:31
记忆提示
🎯 重点记忆:
单词拼写:upper quadrant semaphore signal
核心含义:向上臂木号志机
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更新时间:2026-02-02 10:50:06