| 单词 | θ191683 |
| 释义 | society > communication > indication > signalling > visual signalling (147) Subcategories:— flag signalling (44) — luminous signals (56) — heliography (12) — smoke signals (6) — semaphore (20) — signal made by waving (6) — other visual signals (3) |
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英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。