congenital absence of salivary gland

例句：

1. 1. The congenital defect inher heart was discovered during a routine check-up.
   她在例行检查中发现了她心脏的先天性缺陷。
2. 2. The child's congenital hearing loss required special educationservices.
   这个孩子的先天性听力丧失需要特殊的教育服务。
3. 3. The researcher found that thecongenital malformationcould be traced back to a geneticmutation.
   研究者发现，这种先天性畸形可以追溯到一种遗传突变。