1.a sudden unforeseen crisis (usually involving danger) that requires immediate action;
he never knew what to do in an emergency
2.a state in which martial law applies;
the governor declared a state of emergency
3.a brake operated by hand; usually operates by mechanical linkage
名词 n. ①紧急情况;突然事件;非常时刻:in case of ~ 若发生紧急情况/proclaim a state of ~宣布处于紧急状态 In an emergency phone 999 for help.遇上紧急事件立刻拨999求救 The government has declared a state of emergency.政府宣布国家进入紧急状态。 ②紧急需要 ③急症(病人)形容词 adj. 紧急情况下使用(或出现)的;应紧急需要的:an ~ meeting紧急会议/an ~ exit 安全门(或太平门)