prevalence
中文意思
- n. 流行，普遍，广泛
英文释义
- n. the quality of prevailing generally; being widespread
- n. (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
词形变化
- 复数
- prevalences
例句
n. 流行，普遍，广泛
Researchers are concerned about the growing prevalence of sleep problems among young people.
研究人员对年轻人中睡眠问题日益普遍的现象表示担忧。