hypognathous type

例句：

1. 1. The study of the hygroglossal type has led to significant advancements in hearing aid technology.
   对中耳型的研究导致了听力辅助技术的重大进步。
2. 2.The tympanic type is a rare condition that affects the middle ear.
   中耳型是一种罕见的状况，影响中耳。
3. 3.The research on the tympanic type has provided valuable insights into the development of the inner ear.
   对中耳型的研究为内耳的发展提供了宝贵的见解。