amplifier
柯林斯詞典
1. N-COUNT An amplifier is an electronic device in a radio or stereo system that causes sounds or signals to get louder. 擴(kuò)音器
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amplifier /??mpl??fa??/ (amplifiers)
劍橋詞典
- an electrical device that makes sounds louder
擴(kuò)音器，敭聲器 返回 amplifier