英语语法分析

So-called recessively inherited disorders, such as Tay-Sachs disease, cystic fibrosis and red blood cell disorders known as thalessemias are rare.

所谓隐性遗传疾病，像“泰-萨克斯病”、“囊性纤维化”，以及被称为“地中海贫血症”的血细胞疾病，都很罕见。