alarm

/əˈlɑrm/

fear resulting from the awareness of danger

中文释义：惊恐；警报

The news of the attack caused widespread alarm among citizens.

袭击的消息在市民中引起了广泛的惊恐。

She set the alarm for six o'clock to catch the early train.

她把闹钟定在六点，以便赶上早班火车。