名词
中文翻译：喇叭
同义词：
['horn', 'trumpet例句：1. The policeman used his megaphone to warn the crowd.（警察用扩音器警告人群。）']
例句：
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1. The policeman used his megaphone to warn the crowd.
警察用扩音器警告人群。
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2. The band played a loud horn at the end of the performance.
乐队在表演结束时吹响了大号。
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3.The announcer used a megaphone to introduce the speaker.
播音员用麦克风介绍发言者。