quintroon

例句：

1. 1. The quintoon is a traditional Chinese musical instrument.
   五音是一种传统的中国乐器。
2. 2. The quintoon was used to teach children the basics of music.
   五音被用来教授孩子们音乐的基本知识。
3. 3. The quintoon has been passed down through generations of musicians.
   五音作为一种音乐形式，已经传承了数代音乐家。