megaphone

'megәfәun

n. a cone-shaped acoustic device held to the mouth to intensify and direct the human voice

n. 扩音器
[医] 反射扩音器

33,089

BNC 频率

21,670

使用频率

megaphone 由前缀 mega-（意为“大”）和词根 phone（意为“声音”）组成，整体意思是“大声音”，可以帮助记忆其含义。

例句

1. The teacher used a megaphone to address the large crowd.

老师用扩音器来对大群人讲话。

2. During the rally, she shouted through a megaphone to get everyone's attention.

在集会上，她通过扩音器大声喊叫以引起大家的注意。

3. The coach used a megaphone to give instructions to the players on the field.

教练用扩音器给场上的球员们下达指令。