epidemic
柯林斯词典
1. N-COUNT If there is an epidemic of a particular disease somewhere, it affects a very large number of people there and spreads quickly to other areas. (疾病的) 流行
A flu epidemic is sweeping through Moscow. 一场流感正席卷莫斯科。
2. N-COUNT If an activity that you disapprove of is increasing or spreading rapidly, you can refer to this as an epidemic of that activity. (坏事的) 盛行[表不满]
...an epidemic of serial killings. …连环谋杀的盛行。
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epidemic /ˌɛpɪˈdɛmɪk/ (epidemics)
剑桥词典
epidemic noun (DISEASE)
[ 可数名词：有复数形式的名词 ]the appearance of a particular disease in a large number of people at the same time
（疾病的）流行，传染
a flu epidemic 流感的传播
epidemic noun (PROBLEM)
[ 可数名词：有复数形式的名词 通常作为单数使用的名词 ]a particular problem that seriously affects many people at the same time
泛滥；蔓延
a crime /unemployment epidemic 犯罪频发／大范围失业 返回 epidemic