light overtone

例句：

1. 1. The instrument has a light overtone that makes it easy to play.
   这把乐器有轻音调，使得演奏起来很容易。
2. 2. The music has a light overtone that adds a soothing quality to the performance.
   这首歌曲有轻音调，为表演增添了舒缓的品质。
3. 3. The scientist discovered a new technique for producing light overtones in lasers.
   这位科学家发现了一种新的技术，可以在激光器中产生轻音调。