Complex sentence: BBC Radio Cymru is the BBC's Welsh-language radio station, broadcasting throughout Wales on FM since 1979-it was one of the few FM-only radio services in the UK at the time of its launch.
Split into simpler sentences: BBC Radio Cymru is BBC Wales' Welsh language radio station, broadcasting throughout Wales on FM since 1979. It was one of the few FM-only radio services in the UK at the time of its launch.