subcontraoctave

例句：

1. 1. The orchestra played a subcontraoctave in the background.
   乐队在背景中演奏了次低音。
2. 2. The violins were playing a subcontraoctave that was perfect for the song.
   小提琴正在演奏一个完美的次低音，非常适合这首歌。
3. 3. The singer's voice had a subcontraoctave that made it sound like she was singing from the heart.
   歌手的声音有一种次低音，听起来像是发自内心的歌唱。