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.
有一个音频接收器放大血流通过血管的声音。
An audio receiver amplifies the sound of the blood moving though the vessel.
耳机一种传递电子信号的设备，比如从电话、立体声或广播接收器上传出可听的声音。这种设备嵌到耳朵上或耳朵里。
A device that converts electric signals, as from a telephone, stereo, or radio receiver, to audible sound and fits over or in the ear.
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