传播疾病。
These efforts contribute to our understanding of the virus, its patterns of spread, and the spectrum of sickness it can cause.
这些努力有助于我们理解这一病毒，其传播模式，以及它可能导致的疾病范围。
The euro could break apart. Greece is the immediate problem, but the sickness has spread much wider.
欧元区可能四分五裂，希腊危机是燃眉之急，但其病灶早已四处扩散。
W. H. O. Director-General Margaret Chan declared the sickness a pandemic – a disease that has spread to many nations.
世界卫生组织总干事MargaretChan宣布H1N1病毒是一种流行性疾病，已经传播到很多国家。
W. H. O. Director-General Margaret Chan declared the sickness a pandemic – a disease that has spread to many nations.
世界卫生组织总干事MargaretChan宣布H1N1病毒是一种流行性疾病，已经传播到很多国家。
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