achondroplasty

例句：

1. 1. The child's condition is a rare genetic disorder known as chondrodysplasia.
   这个孩子患有一种罕见的遗传性疾病，称为软骨发育不全。
2. 2. Hypochondroplasia is a condition that affects the growth and development of bones in children.
   软骨发育不全是一种影响儿童骨骼生长和发育的病症。
3. 3. Skeletal dysplasia is a group of disorders characterized by abnormal bone formation and deformities.
   骨骼发育不良是一种特征为异常骨形成和畸形的疾病组。