测试扬声器 meaning in English
test loudspeaker
Examples
- Posters adorn the gate on the southwest side of the capitol reflecting pool , as attendees set up a table with press materials , while volunteers test a loudspeaker and set out coolers filled with bottled water
用海报装饰国会大厦水池西南门，与会者放了一张放上新闻资料的桌子，志愿者测试扬声器，放置装满瓶装水的冷却器。