（疾病、战争、暴力等的）爆发；（尤指传染病的）暴发，突然大规模发生。
/ˈaʊtbreɪk/
An outbreak of flu closed the school for a week.
一场流感暴发导致学校停课一周。
Health officials warned that the outbreak could spread quickly if people ignored basic hygiene and travel advice.
卫生官员警告说，如果人们忽视基本卫生和出行建议，疫情暴发可能会迅速扩散。
outbreak 由 out（向外、出来）和 break（破裂、爆发）组合而成，本义是“突然冲出、破裂而出”，后来常用来指疾病、战乱或暴力事件等“突然爆发并扩散”的情况。
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