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感冒有两种: 普通感冒和流行性感冒。普通感冒病情较轻?一般不会传染;流行性感冒发病急,病情重,传染性强, 危害性很大。
There are two types of cold: the common cold and influenza. Ordinary flu mild? General does not contagious; acute onset of influenza, severe illness, contagious, great harm.