n. a widespread outbreak of an infectious disease; many people are infected at the same time
a. (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously
n. 传染病, 流行病
a. 流行的, 传染性的
1. The city declared a state of emergency due to the flu epidemic.
由于流感疫情，该市宣布进入紧急状态。
2. Health officials are working hard to control the spread of the epidemic.
卫生官员正在努力控制疫情的传播。
3. During an epidemic, it's important to follow health guidelines to stay safe.
在疫情期间，遵循健康指南以保持安全是很重要的。