2.The loudspeaker announced each airplane as it landed at the airport.
机在机场一着陆, 扩就发出通告。
3.SASHED candidates standing on car roofs, their voices crackling through loudspeakers.
候选人从车顶的窗口探出头来,扩下他的嗓略微嘈杂。
4.The loudspeakers blared the speech repeatedly.
扬声里反复大声地播送那篇演讲。
5.Abstract: A network model was developed to analyze a piezoelectric source driving a resonantor to investigate the coupling of the piezoelectric loudspeaker with a thermoacoustic resonantor.