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- 角状扩音器一种用来产生声波的装置,如扬声器
A device for projecting sound waves, as in a loudspeaker.
- 扩音器的噪音突然传进我们的耳中。
The blare of the speaker burst upon our ears.
- 他使用扩音器,使人人能听见他的讲话。
He used a microphone so that everyone could hear him.
- 我昨天买了一个扩音器。
I bought an amplifier yesterday.
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海词词典,十七年品牌