名词
中文翻译：麦克风
同义词：
['microphone', 'megaphone', 'megaphone', 'megaphone']
例句：
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1. The teacher used a megaphone to call the students to attention.
老师用扩音器叫学生注意。
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2.The band leader held a megaphone to his lips and started playing.
乐队领队拿着扩音器对着嘴开始演奏。
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3. The announcer used a megaphone to introduce the upcoming event.
播音员用扩音器介绍即将到来的活动。