fiddle back

例句：

1. 1.She fiddled back the strings of her guitar to make a softer sound.
   她调弦回音，让吉他发出更柔和的声音。
2. 2. The fiddler played a beautiful tune that echoed through the room.
   那位小提琴手演奏了一首美妙的曲子，在房间里回荡。
3. 3.After playing his fiddle back, he started to sing a lively song.
   他调弦后开始唱歌，唱得非常活跃。