megaphone
n. 扩音器
v. (用扩音器)传达
形容词：megaphonic 副词：megaphonically 过去式：megaphoned 过去分词：megaphoned 现在分词：megaphoning 第三人称单数：megaphones
近义词：loudspeaker，amplifier，bullhorn，loudhailer，mike，pa，public-addresssystem，
英英释义
Noun
- a cone-shaped acoustic device held to the mouth to intensify and direct the human voice
例句
用作名词(n.)
- He often speaks in public with a megaphone.他常用扩音器当着大众演说。
- The mayor addressed the stirred crowd with a megaphone.市长用扩音器向激动的群众讲话。
- The conference hall was installed with radio set and megaphone.会场里设置了收音机和扩音器。