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。
In Uganda,a new study has confirmed earlier research linking the spread of sleeping sickness to infected farm animals.
VOA: special.2010.01.04
W.H.O.Director-General Margaret Chan declared the sickness a pandemic a disease that has spread to many nations.
VOA: special.2009.07.14
Sleeping sickness is spread by the bite of the tsetse fly.
VOA: special.2010.04.07
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