不可數。用于身體的某個部分，表示相應的病，通常不可數。表示疾病的總稱，也為不可數名詞。如：Flies spread disease。蒼蠅能傳播疾病。表示某種疾病，為可數名詞。如：Cancer is a deadly disease。癌癥是一種致命的疾病。

disaster例句

nvestors believed disaster had been averted .

投資者認為已經躲過了災難。

So far rust has not caused a disaster .

到目前為止，銹病并沒有造成災害。

New government spending on disaster reconstruction is expected to help offset weaker overseas demand .

新的政府在災后重建上的開支被期望幫助抵消海外需求的疲軟。

Surprise spells disaster for people seeking change .

對尋求改變的人來說，驚喜會招致災禍。

It has taken even longer to fully understand that his life was a disaster .

過了更久的時間，人們才發現他的生活多么悲慘不幸。