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.
近年来，肥胖的流行率显著增加。
•
There is a high prevalence of this disease in tropical regions.
这种疾病在热带地区有很高的流行率。