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English

Think of it this way: If we speak into a microphone, the sound travels through the cables into amplifier and then comes out of the loud speakers so everyone can hear it.

Chinese

这样想一想吧:如果你对麦克风讲话,声音会通过电缆传播到扩音器,然后通过高音喇叭输出使众人能听得见。