n.an automatic signal (usually a sound) warning of danger

同義詞：alarmalertwarning signal

1. The sudden alarum startled the soldiers, signaling the approach of the enemy.
   突然的警報使士兵們驚慌，標志著敵人的逼近。
2. In Shakespeare's plays, the sound of an alarum often indicates a turning point in the action.
   在莎士比亞的戲劇中，警報的聲音常常標志著情節(jié)的轉(zhuǎn)折點。