If there is an outbreak of something unpleasant, such as violence or a disease, it suddenly starts to happen. (暴动、疾病等的) 爆发
noun [抽象名词] （战争、疾病、暴力等的）爆发，突然发生
The four-day festival ended a day early after an outbreak of violence involving hundreds of youths. 由于一起数百名年轻人参与的暴力事件的爆发，为期4天的庆祝活动提前1天结束。
来自词组break out(突发， 爆发)
n. （疾病的）发作；（战争的）爆发
- 网友用 “Outbreak” 造句精选
- ...an outbreak of chickenpox. …水痘的暴发。
- The area was struck by an outbreak of cholera. 那一地区爆发了霍乱。
- His death set in motion a train of events that led to the outbreak of war. 他的死引发了一系列的事件，从而导致了战争的爆发。
- He was interned as an enemy alien at the outbreak of the Second World War. 他在第二次世界大战爆发时被作为敌国侨民扣押了。