Amplifier is electrical device which make sounds louder.

扩音器是一种使声音放大的电气装置.

《简明英汉词典》

There are electronic organizes that make sounds to remind people of things they must do.

现在有电子的可以发生提醒人们他们必须要做的事情.

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It a percussion instrument, so a musician must beat or strike it to make sounds.

它属于敲打乐器, 所以音乐家必须以敲击或打击的方式使其发声.

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Voice - Output Devices Voice - output devices make sounds that resemble human speech but actually are pre - recorded vocalized sounds.

声音输出设备声音输出设备可以发出类似于人类说话的声音,但实际上是事先录制的声音.

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