n.

fear resulting from the awareness of danger

同義詞：dismayconsternation

a device that signals the occurrence of some undesirable event

同義詞：warning devicealarm system

an automatic signal (usually a sound) warning of danger

同義詞：alertwarning signalalarum

a clock that wakes sleeper at preset time

同義詞：alarm clock

1. The smoke alarms went off as soon as the fire started, alerting everyone in the building.
   煙霧警報器在火災發(fā)生的第一時間響起，提醒了大樓里的每個人。
2. She felt a sense of alarm when she received the news about the earthquake.
   當她收到關于地震的消息時，她感到一陣恐慌。
3. The security system includes multiple alarms to ensure the safety of the premises.
   安全系統(tǒng)包括多個警報，以確保場所的安全。
4. His sudden change in behavior raised alarms among his friends.
   他行為的突然變化引起了朋友們的警覺。