Originally Military. A call or military signal to prepare for an attack; a warning of potential danger; an announcement to look out for something.
| 单词 | θ191861 |
| 释义 | society > communication > indication > signalling > [noun] > signal > danger-signal (4) alert1757 Originally Military. A call or military signal to prepare for an attack; a warning of potential danger; an announcement to look out for something. red light1790 A red warning light, esp. (in later use) one instructing traffic to stop. Now frequently figurative: an indication of danger; a warning; a signal… danger-signal1848 a signal indicating danger; spec. on Railways, a signal (usually the extended arm of a signal-post painted red, or a red light) indicating an… Subcategories:— all clear (1) |
| 随便看 |
|
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。