1、
Sound headphone also requires a quality amplifier just like a top-grade loudspeaker.
靓声的耳机就如同高级的喇叭,同样需要高素质的放大器来伺候.
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2、
A loudspeaker first turns an electrical signal into a voice , and then transmits the voice out.
扬声器是将电信号转换成声音, 传送出去.
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3、
Nearly all serious loudspeaker designs have incorporated a crossover network.
几乎所有严肃的扬声器设计都会涉及分频网络.
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4、
5、
I distinctly heard the loudspeaker calling passengers for the Turin-Amsterdam flight.
我清楚地听到扩音器里在请都灵至阿姆斯特丹航班的旅客登机。
《柯林斯高阶英汉双解学习词典》
