扩音器 麦克风英释
She spoke confidently into the microphone..她自信地对着麦克风说话。
They searched the room for hidden microphones..他们在屋里翻找隐藏的话筒。
wireless microphone,无线话筒；无线传声器
condenser microphone,电容式传声器
electret microphone,驻极体麦克风
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