习惯用语in an emergency (=in case of emergency)1.遇到紧急情况, 在紧急关头rise to the emergency1.能够应付紧急事变rise to the occasion1.能够应付紧急事变特殊用法dead man emergency1.“安全警惕”紧急制动high-pressure emergency1.高压紧急制动nondelayed emergency1.不延迟的紧急制动transportation emergency1.运输非常状态