megaphone
n. 扩音器
A megaphone is a cone-shaped device for making your voice sound louder in the open air.
1. a cone-shaped acoustic device held to the mouth to intensify and direct the human voice
Somewhere a voice is loud a megaphone.
远处什么地方的扩音器里传来响亮的声音.
He often speaks in public with a megaphone.
他常用扩音器当着大众演说.
McGonagall always stands by to take the megaphone away if he gets out of hand.
麦格教授总是站在一边,以便在他失控的时候抢下扩音器.
Making monetary policy by megaphone never leads to good results.
夸夸其谈的货币政策决不会取得效果.
People's Daily is just a megaphone for the Communist Party but it is withering.
人民日报不过是党的喉舌,但每况愈下,信其报道的人是越来越少.