Most studies could not quantify disease frequency in the general population as they are hospital-based and confounded by variations in threshold and the rate of hospitalization.
多数研究不能把一般人群当中的发病频率给予定量是因为它们是基于医院的并且被混杂在住院率的变化之中。
Malnutrition will increase, as will the number of deaths from diarrhoeal disease. More storms and floods will cause more deaths and injuries, and cholera outbreaks will occur with greater frequency.
营养不良人数以及腹泻病死亡人数将增加，更多的风暴和水灾将造成更多人死伤，霍乱疫情的暴发频率将越来越高。
Asthma is a chronic disease characterized by recurrent attacks of breathlessness and wheezing, which vary in severity and frequency from person to person.
哮喘是一种慢性病，以呼吸困难和喘息反复发作为特征，其严重程度和发作频率因人而异。
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