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Meaning of 扩音器

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kuò yīn (Trad.: 擴音器)
megaphone; loudspeaker; amplifier; microphone
Example Sentences
1
The lab also produces ratings for loudspeakers.
2
A
On the overhead loudspeaker, a voice called out, "Condition A."
3
My arrest can be announced publicly from loudspeakers on top of a car.
4
They need to curate the conversation, and not just be loudspeakers.
5
The bear is used as a pillow, but has a built-in microphone.