prevalence
US /ˈprev.əl.əns/
UK /ˈprev.əl.əns/
1.
流行, 普遍
the fact of being widespread in a particular area at a particular time
:
•
The prevalence of obesity has increased significantly in recent years.
近年來，肥胖的流行率顯著增加。
•
There is a high prevalence of this disease in tropical regions.
這種疾病在熱帶地區有很高的流行率。