red alert

英 美
  • n.应急状态(紧急警报)
  • alert adj.警觉的;灵敏的vt.使意识到;警惕n.警戒;警报
  • red adj.红色的n.红色
Noun:
  1. the highest level of alert when an attack by the enemy seems imminent (or more generally a state of alert resulting from imminent danger)

    1. The district was put on red alert during a terrorist bomb scare.
      这个地区在得到恐怖主义者轰炸后作了应急准备。