disease可数么

disease 是既是可数又是不可数的， 例如：

1. [不可数] an illness which affects a person, animal, or plant
She suffers from a rare disease of the brain.
Heart disease runs in our family.
a family disease; 遗传病
2. [可数] something that is seriously wrong with society or with someone's mind, behaviour etc
diseases of society：社会弊病
prevent and cure diseases:预防和治疗

可数