a cone-shaped acoustic device held to the mouth to intensify and direct the human voice
A megaphone, speaking-trumpet, bullhorn, blowhorn, or loud hailer is a portable, usually hand-held, cone-shaped acoustic horn used to amplify a person’s voice or other sounds and direct it in a given direction. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it, and the sound waves radiate out the wide end.
例句与用法
1.
The conference hall was installed with radio set and megaphone . 会场里设置了收音机和扩音器。
2.
- that megaphone . - the megaphone didn ' t beat me -那个扩音器-我不是被扩音器打败
3.
That megaphone . - the megaphone didn ' t beat me 那个扩音器-我不是被扩音器打败
4.
[ on megaphone ] sorry about your wife , reuben 对你妻子的事我很难过,鲁本
5.
On megaphone sorry about your wife , reuben 对你妻子的事我很难过,鲁本
6.
General specification for portable megaphone 便携式喊话器通用技术条件
7.
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。
8.
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。
9.
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，以便在他不能控制自己的时候抢下扩音器。
10.
Jude : well i ' m sorry i ' m not the man with the megaphone , but this is what i do 裘德：好吧，我很抱歉我不是那个拿着扩音筒的人，但这正是我要做的。
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