radio fixing aids

例句：

1. 1. The radio was set to the correct frequency for the local station.
   收音机被设置到了当地电台的正确频率。
2. 2.She used a radio frequency tuner to listen to her favorite music.
   她使用一个无线电频调谐器来听她最喜欢的音乐。
3. 3.The engineer fixed the radio with a new radio frequency amplifier.
   工程师用一个新的无线电频放大器修理了收音机。