Pneumatic loudspeaker气动扬声器;气流传声器;气动
loudspeaker van广告宣传车;骂;广播宣传车
piezoelectric loudspeaker[电子] 压电扬声器;压电式扬声器英语;压电晶体
multiband loudspeaker多频带扬声器
loudspeaker telephone带有扬声颇电话机;扬声电话机;带有扬声颇
iron loudspeaker舌簧扬声器
coaxial loudspeaker同轴扬声器;同轴喇叭;同轴
cabinet loudspeaker箱式扬声器
condenser loudspeaker电容式扬声器;翻译;电容扬声器
N-COUNT（可数名词） A loudspeaker is a piece of electronic equipment that forms part of a public address system and transmits sound. 扬声器
The loudspeaker announced the arrival of the train.
广播说火车进站了。
N-COUNT（可数名词） A loudspeaker is a piece of equipment, for example, part of a radio or hi-fi system, through which sound comes out. 喇叭 [英国英语]