congenital absence of external auditory meatus

例句：

1. 1. The congenital condition ofthe disease is a major concern for doctors.
   这种疾病的先天性状况是医生们的主要担忧。
2. 2. The child's congenital disability has been a source of greatdistress to his parents.
   孩子的先天性残疾一直是他父母深感痛苦的根源。
3. 3. Thescientist discovered that the congenital defect was causedby a rare genetic mutation.
   科学家发现，这种先天性缺陷是由一种罕见的基因突变引起的。