chondroplasia

例句：

1. 1.The child has a rare genetic disorder called chondrodysplasia.
   这个孩子患有一种罕见的遗传性疾病，叫做软骨发育不全症。
2. 2. Chondrodysplasia punctata is a type of chondrodysplasia that affects the cartilage in the hands and feet.
   软骨发育不全症是一种影响手和脚软骨的软骨发育不全症类型。
3. 3.In some cases, children with chondrodysplasia may experience difficulty walking due to their joints being too soft or weak.
   在某些情况下，患有软骨发育不全症的儿童可能会因为关节过于柔软或无力而行走困难。