Satellite - A radio relay station that orbits earth. A satellite communications system also includes earth stations which communicate with each other via the satellite.
卫星- 绕地球运转的一个无线电转发站，卫星通讯系统还包括每个通过卫星进行通讯的地面台站。
As the satellite received a signl from a ground or earth station , a communications complex that transmitted and received satellite signals, it telayed its own signal to earth.
地面站是传送/接收卫星信号的通信设备，卫星接收来自地面站发送的信号后，再将其信号传送给地球。
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