Amplifier is electrical device which make sounds louder.

器是一种使声
放大
电气装置。
Amplifier is electrical device which make sounds louder.

器是一种使声
放大
电气装置。
SASHED candidates standing on car roofs, their voices crackling through loudspeakers.
候选人从车顶
窗口探出头来,
器下他
嗓
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, 
器就发出
告。
The Mega-Sonic Scatter-Cat Repeller looks like a megaphone because it actually is one.
这个超
波驱猫器看上去像个
器,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
器。
He used a microphone so that everyone could hear him.
"他使用
器,使人人都能听见他
讲话。"
All the speakers hook up to a single amplifier.
所有喇叭都接在单一

器上。
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