红色警戒的英文：
red alert
adj. 红色的；褐红色的；深红的；布满血丝的；支持左翼政治观点的；社会党的
n. 赤字；亏空
Red got his nickname for his red hair.
“红毛”的绰号源于他的红头发。
The sun will swell into a red giant.
太阳将膨胀为一颗红巨星。
red lake C pigment
色淀Ｃ颜料红
Iron oxide red pigments
GB/T1863-1989氧化铁红颜料
Roll out the red carpet.
热烈欢迎。
adj. 警觉的；思维敏捷的
v. 向…报警；使警觉，使意识到
n. 警戒，警惕；警报
Suddenly the combat alert sounded.
突然战斗警报响了。
conflict alert (CA)
碰撞警告
She was very brisk and alert.
她完全是一副干脆利落、精神抖擞的神情。
They have put the army on the alert.
他们已使军队进入戒备状态。
Don't alert the enemy.
不要惊动敌人。