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Prevalence
01
流行程度, 优势
the state or quality of existing or happening every commonly in a specific place or at a specific time
02
流行程度, 数量上的优势
a superiority in numbers or amount
03
流行率
(epidemiology) the ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population