名词
中文翻译：放大器
同义词：
['amplify', 'amplifier']
例句：
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1.The engineer needs to amplify the sound for better communication.
工程师需要放大声音以便更好的沟通。
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2. The amplitube was used to amplify the signal from the microphone.
扩音器被用来放大麦克风的信号。
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3. The teacher demonstrated how to use an amplitube effectively.
老师演示了如何有效地使用扩音器。