每一瓶鼻滴应该只由一人使用，以避免传染感染。

Each bottle of nasal drops should only be used by one person, to avoid spreading infection.

youdao

最近疫情大爆发：当世界将焦点转向墨西哥的猪流感时，一场严重的登革热传染感染了玻利维亚的50000人和阿根廷的20000人。

Current outbreak: While the world's attention has been focused on Mexico's swine flu, a severe dengue outbreak infected 50, 000 people in Bolivia and more than 20, 000 in Argentina.

youdao

最近疫情大爆发：当世界将焦点转向墨西哥的猪流感时，一场严重的登革热传染感染了玻利维亚的50000人和阿根廷的20000人。

Current outbreak: While the world's attention has been focused on Mexico's swine flu, a severe dengue outbreak infected 50,000 people in Bolivia and more than 20,000 in Argentina.

youdao

And so you can see the pneumonia, tuberculosis, the communicable diseases, infectious diseases, for the most part, are taking the most lives at that point.

你可以看到肺炎,肺结核,传染病,感染性疾病,是夺走大多数人生命的主要原因

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So in a town that's the size of new Haven with a population of let's say 100,000 people in just the immediate New Haven area, there might be 20 of these instances of very severe form of polio per year, 20 crippled children would result.

在一个像纽黑文这么大的城市里,大约有十万人口,生活在纽黑文地区的人当中,每年可能就会有二十人,感染到这种急性传染病,可能会导致二十个孩子残疾

耶鲁公开课 - 生物医学工程探索课程节选