名词
中文翻译：放大器
同义词：
['manipulator', 'amplifier', 'amplifying device例句：1. The man-amplifier was used to amplify the sound of the recording.（这个放大器被用来放大录音的声音。）2. The man-amplifier was designed to improve the quality of audio signals.（这个放大器被设计来提高音频信号的质量。）3. The man-amplifier was used to amplify the sound of the speech.（这个放大器被用来放大说话的声音。）']
例句：
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1. The man-amplifier was used to amplify the sound of the recording.
这个放大器被用来放大录音的声音。
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2. The man-amplifier was designed to improve the quality of audio signals.
这个放大器被设计来提高音频信号的质量。
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3. The man-amplifier was used to amplify the sound of the speech.
这个放大器被用来放大说话的声音。