posterior auricular muscle

例句：

1. 1.The posterior auricular muscle is responsible for the movement of the ear.
   后耳肌负责耳朵的运动。
2. 2. In some cases, the posterior auricular muscle can cause hearing loss.
   在某些情况下，后耳肌可能导致听力丧失。
3. 3. During sleep, the posterior auricular muscle relaxes, allowing the ear to rest.
   在睡眠时，后耳肌放松，使耳朵得以休息。