[, ]a sudden serious event or situation which needs immediate action 紧急情况；突发事件◆Staff are trained on what to do in an emergency. 培训员工如何应对突发事件。
[] (used as an adjective 用作形容词) used or done in an emergency 紧急的；应急的◆They maintain emergency stocks of oil. 他们维持应急石油储备。◆The company called an emergency board meeting to discuss the offer. 公司召开紧急董事会会议讨论这一提议。