柯林斯詞典burglar alarm (burglar alarms) 1. N-COUNT A burglar alarm is an electric device that makes a bell ring loudly if someone tries to enter a building by force. 防盜報(bào)警器 返回 burglar alarm劍橋詞典a device on a building that gives a warning such as making a loud noise or flashing a light , or tells the police , if someone tries to enter the building illegally 防盜警報(bào)器 返回 burglar alarm