emergency

/ˈimərʤənsi/

a sudden unforeseen crisis (usually involving danger) that requires immediate action

中文释义：紧急情况；突发事件

In case of emergency, please dial 911 for immediate assistance.

如遇紧急情况，请拨打911寻求立即援助。

The hospital has a dedicated emergency room that operates 24 hours a day.

这家医院设有专门的急诊室，每天24小时运作。