Loudhailer
01
扩音器, 喇叭
a device used to amplify sound, typically for public speaking or making announcements
例子
The protest leader used a loudhailer to address the crowd.
抗议领袖用扩音器向人群讲话。
He stood on the platform, shouting through the loudhailer.
他站在平台上，通过扩音器大喊。
