noun 下载 🔗分享 扬声器，喇叭。 An electromechanical transducer that converts an electrical signal into audible sound. Examples : "The teacher used the loudspeaker to announce the school's upcoming field trip. " 老师用喇叭宣布学校即将举行的郊游。 electronics device sound technology machine communication 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 扬声器，喇叭。 An encasing containing one or more loudspeaker devices and usually other electrical equipment such as a driver. Examples : "The principal made an announcement through the loudspeaker, so everyone in the school could hear. " 校长通过扩音喇叭广播通知，这样学校里的每个人都能听到。 electronics sound technology communication device machine technical 与AI对话词汇游戏阅读练习
