办公室里流行着一种病毒性疾病。
世界上流行着一种病毒性疾病。
医用口罩对病毒性疾病有一定保护。
Surgical face masks can offer some protection against viral outbreaks.
乙肝是另一种儿童幼时感染的病毒性疾病。
Hepatitis B is another viral infection that children can get early in life.
基孔肯雅热是一种通过蚊子传播的病毒性疾病。
Chikungunya is a viral disease that is spread by mosquitoes.
基孔肯雅热是一种通过蚊子传播的病毒性疾病。
Chikungunya is a viral disease that is spread by mosquitoes.
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