alarms

n.

fear resulting from the awareness of danger

同义词：dismayconsternation

a device that signals the occurrence of some undesirable event

同义词：warning devicealarm system

an automatic signal (usually a sound) warning of danger

同义词：alertwarning signalalarum

a clock that wakes sleeper at preset time

同义词：alarm clock

1. The smoke alarms went off as soon as the fire started, alerting everyone in the building.
   烟雾警报器在火灾发生的第一时间响起，提醒了大楼里的每个人。
2. She felt a sense of alarm when she received the news about the earthquake.
   当她收到关于地震的消息时，她感到一阵恐慌。
3. The security system includes multiple alarms to ensure the safety of the premises.
   安全系统包括多个警报，以确保场所的安全。
4. His sudden change in behavior raised alarms among his friends.
   他行为的突然变化引起了朋友们的警觉。