phacomatosis

例句：

1. 1. The phacomatosis ofthe disease is a major cause of deathin many countries.
   这种疾病的phacomatosis是许多国家的主要死因。
2. 2. Thephacomatosis of the diseasehas been studied extensively in recent years.
   这种疾病的phacomatosis在近年来得到了广泛的研究。
3. 3. The phacomatosisof the disease is a serious concern forpublic health.
   这种疾病的phacomatosis对公共卫生是一个严重的问题。