柯林斯詞典fire alarm (fire alarms) 1. N-COUNT A fire alarm is a device that makes a noise, for example, with a bell, to warn people when there is a fire. 火警報(bào)警器 The smoke sets off the fire alarm. 菸霧觸發(fā)了火警報(bào)警器。 返回 fire alarm劍橋詞典a device such as a bell or siren that warns the people in a building that the building is on fire 火警報(bào)警器，火警鍾；火警報(bào)警器開關(guān) If the fire alarm goes off (= starts making a sound ), leave the building calmly . 如果火警報(bào)警器響了，請保持鎮(zhèn)定，離開大樓。 返回 fire alarm