Ramus meatus acustici interni

例句：

1. 1.The instrument is designed for acustic use only.
   这个乐器仅用于听觉用途。
2. 2. Acoustic music is often more relaxing than electronic music.
   声乐音乐通常比电子音乐更让人放松。
3. 3. Acoustics are the science of sound and its propagation.
   声学是关于声音及其传播的科学。