casen.例子；情况；案例；（辩论或诉讼）论据；箱v.装箱；踩点；仔细检查Casertan.卡塞塔(在意大利；东经 14º20' 北纬 41º04')

1. Many factors complicate efforts to calculate a case fatality ratio while an outbreak is still evolving.
   疾病仍处于暴发期时很多因素使计算病例病死率的努力复杂化。
2. A case fatality ratio measures the proportion of all people with a disease who will die from the disease.
   病例病死率计量所有人群中死于所患疾病的比例。