airwaves

n.

电视广播；电视，广播的频道( airwave的名词复数)；〔电子〕空中电波；

1. A well-known voice came over the airwaves.
   电波传来了一个大家熟悉的声音。
2. More and more TV and radio stations are crowding the airwaves.
   愈来愈多的电视台和广播电台使无线电波段愈来愈拥挤。

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