... 有线通信设备：wired communication equipment 有线受话筒：wire telephone receiver 有线收报机：wire telegraph-receiver ...
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For example, a telephone call may travel by means of copper wire, fiber-optic cable, and radio waves as the call is sent from sender to receiver.
例如，电话中的通话从讲话人传送到听话人，其间可能要通过铜线、光缆和无线电波进行传输。
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