minor tone

例句：

1. 1. The minor tone in the song is quite pleasant.
   这首歌中的次要音调相当悦耳。
2. 2.The teacher noticed that the students had different minor tones when speaking.
   老师注意到学生们在说话时有不同的次要音调。
3. 3. The minor tone of the instrument is what makes it unique.
   这个乐器的次要音调是它独特的原因。