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(bào)器在火災(zāi)發(fā)生的第一時(shí)間響起，提醒了大樓里的每個(gè)人。
2. She felt a sense of alarm when she received the news about the earthquake.
   當(dāng)她收到關(guān)于地震的消息時(shí)，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(gè)警報(bào)，以確保場(chǎng)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。