megalosyndactyly

例句：

1. 1. The child has a rare genetic disorder called megalosyndactyly.
   这个孩子患有一种罕见的遗传病，叫做巨指并指。
2. 2.The patient's hands are unusually large due to the condition of megalosyndactyly.
   由于这种状况，患者的手异常地大。
3. 3. This syndrome is characterized by the presence of megalosyndactyly in both hands and feet.
   这种综合征的特征是双手和双脚都有巨指并指。