An outbreak of fire or an accident is an emergency.突然发生的一场火或一场事故都是一个紧急事件。
He has the wit to act quickly and reasonably in an emergency.在紧急情况下,他表现得头脑清醒,反应快。
They were asked to give up their holidays on account of the national emergency.在政治危机的时候,他们被要求放弃假期。
