congenital absence of thyroid gland

例句：

1. 1. The congenital defect inthe child's heart was not discovereduntil he was older.
   这个孩子心脏的先天性缺陷直到他长大后才被发现。
2. 2. Thescientist found that the congenitalmutation had a significant impact on the organism's development.
   这位科学家发现，这种先天性突变对生物体的发展产生了重大影响。
3. 3. The congenital condition requiresspecialized care and treatment.
   这种先天性状况需要特殊的护理和治疗。