扩音器

Amplifier is electrical device which make sounds louder.

扩音是一种声音放大装置。

SASHED candidates standing on car roofs, their voices crackling through loudspeakers.

候选从车顶窗口探出头来，扩音下他嗓音略微嘈杂。

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

每架飞机在机场一着陆, 扩音就发出告。

The Mega-Sonic Scatter-Cat Repeller looks like a megaphone because it actually is one.

这个超音波驱猫看上去像个扩音，因为它确是。

He gave a tap at the microphone before speaking.

他在讲话前先轻叩了一下扩音。

He used a microphone so that everyone could hear him.

"他用扩音,都能听见他讲话。"

All the speakers hook up to a single amplifier.

所有喇叭都接在单一扩音上。