epidemic

每日一词:

epidemic(ĕpĭ-dĕmĭk):

传染病;飞速增长(的)。 Every fall, the medical community worries about the possibility of a flu epidemic./每逢秋天,医疗部门就担心发生流行性感冒传染病。

延伸内容:

世界性(或全国性)的传染病叫做pandemic,在某个区域零星发作的传染病叫做sporadic.

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