emergencyn.突发事件；紧急状态adj.应急的；紧急的；备用的emergency tank速潜舱,救生舱emergency fuel应急燃料emergency disk急救磁盘emergency pump应急泵emergency lamp事故备用灯emergency time应急时间emergency road备用道路emergency raft应急救生筏emergency work急救工作,应急工程emergencybrake紧急制动