天空电波

例句：

1. 1. The skywave transmitter is used to communicate over long distances.
   天空电波发射器用于长距离通信。
2. 2.The ionosphere waves are responsible for the formation of the aurora borealis.
   电离层波负责形成北极光。
3. 3. The skywave technology has revolutionized the way we communicate with each other.
   天空电波技术已经彻底改变了我们彼此交流的方式。