tonic sol-fa

例句：

1. 1.The tonic sol-fa system is a method of notating music that uses the notes of the alphabet to represent musical notes.
   音节音阶系统是一种使用字母表的音符来表示音乐音符的方法。
2. 2.In the tonic sol-fa system, the note C represents the sound of the letter C in English.
   在音节音阶系统中，C音代表英语字母C的声音。
3. 3. The tonic sol-fa system is widely used in Western music and has been adopted by many other cultures as well.
   音节音阶系统在西方音乐中广泛使用，也被许多其他文化采纳。