The receiver of a trapped miner converts the magnetic waves into electrical signals, which he hears as a voice, and he responds with his position.
被困矿工的接收器再把磁波转换成电子信号，他就能听到声音，在他的位置做出回应。
The receiver of a trapped miner converts the magnetic waves into electrical signals, which he hears as a voice, and he responds with his position.
被困矿工的接收器再把磁波转换成电子信号，他就能听到声音，在他的位置做出回应。
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