| 单词 | yellow alert |
| 释义 | yellow alert 1. (in military or civilian defense) the first alert given when enemy aircraft are discovered approaching a military installation, city, coastline, etc. Cf. blue alert, red alert, white alert. 2. the signal or alarm sounded for this alert. 3. any primary stage of alert, as when toxic chemicals have escaped in a particular area and a potential hazard exists. [1965-70] |
| 随便看 |
|
英语词典包含168451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。