| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024yel′low alert′, - Military(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.
- Militarythe signal or alarm sounded for this alert.
- any primary stage of alert, as when toxic chemicals have escaped in a particular area and a potential hazard exists.
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