不可数。用于身体的某个部分，表示相应的病，通常不可数。表示疾病的总称，也为不可数名词。如：Flies spread disease。苍蝇能传播疾病。表示某种疾病，为可数名词。如：Cancer is a deadly disease。癌症是一种致命的疾病。
disaster例句
nvestors believed disaster had been averted .
投资者认为已经躲过了灾难。
So far rust has not caused a disaster .
到目前为止，锈病并没有造成灾害。
New government spending on disaster reconstruction is expected to help offset weaker overseas demand .
新的政府在灾后重建上的开支被期望帮助抵消海外需求的疲软。
Surprise spells disaster for people seeking change .
对寻求改变的人来说，惊喜会招致灾祸。
It has taken even longer to fully understand that his life was a disaster .
过了更久的时间，人们才发现他的生活多么悲惨不幸。
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