emergency

英 [ɪ'mɜːdʒ(ə)nsɪ] 美[ɪ'mɝdʒənsi]

• n. 紧急情况；突发事件；非常时刻
• adj. 紧急的；备用的

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