扩音器

A megaphone boomed out, "This is the police."

扩音器响了起来：“我们是警察。”

The loudspeaker announced each airplane as it landed at the airport.

每架飞机在机场一着陆,扩音器就发出通告.

The loudspeaker's stopped working.

扩音器不响了.

Officials used loud hailers to call for calm.

官员们用扩音器呼吁大家保持冷静。

All the speakers hook up to a single amplifier.

所有喇叭都接在单一的扩音器上.

Cheers greeted Cleveland as he walked to the microphone.

克利夫兰走到扩音器跟前,顿时一片欢呼.

They plugged their guitars into amplifiers.

他们把吉他与扩音器相接。

He gave a tap at the microphone before speaking.

他在讲话前先轻叩了一下扩音器.

The conference hall was installed with radio sets and megaphones.

会场里设置了收音机和扩音器.

The two Russians settled themselves, perfectly at ease , at the microphones.

这两位俄国人泰然自若地坐到了扩音器前面.

a 25 watt amplifier

一台25瓦扩音器

"This is the police," came the amplified voice from the helicopter.

“我们是警察，”直升机上传来扩音器中的声音。

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。

Amplifier is electrical device which make sounds louder.

扩音器是一种使声音放大的电气装置.

He called me over the Tannoy.

他用天朗扩音器喊我。