an amplifier for restoring the strength of a transmitted signal
例句
用作名词 (n.)
Many dropped into the relay station when in town. 很多人进城时就到中继站来。
Generally, Satellite relay stations receive electromagnetic waves from one part of the Earth and then transmit them to another part of the Earth. 卫星中继站通常从地球的一个地区接收无线电波，然后再把它们传送到另一个地区去。
美
