triplet quadrupole

例句：

1. 1. The composer composed a triplet for the orchestra.
   作曲家为管弦乐队创作了一首三重奏。
2. 2. In music, a triplet is a group of three notes played together.
   在音乐中，三重奏是一组三个音符一起演奏的。
3. 3. The conductor led the triplet section with precision.
   指挥家以精确的方式带领三重奏部分。