recessus ellipticus vestibuli

例句：

1. 1. The patient's head was placed in a recessus ellipticus to facilitate the examination.
   患者头部被放置在一个椭圆凹陷处以便于检查。
2. 2. The vestibulum is an area of the ear that houses the auditory canal.
   耳前区是耳朵内听觉道所在的地方。
3. 3. The doctor carefully removed the foreign object from the vestibulum using tweezers.
   医生用镊子小心翼翼地从耳前区取出了异物。