折射望远镜

例句：

1. 1. The radio waves are transmitted throughthe air.
   无线电波通过空气传播。
2. 2. Thesatellite transmits signals to Earth.
   卫星向地球发送信号。
3. 3. The light from the sunis transmitted through space.
   太阳的光通过太空传播。