es.ca.la.tion .es7kE5leI7F[n n 扩大;升级 It's difficult to explain the recent escalation in/of violent crime. [U] 很难解释最近暴力犯罪活动的上升。 Taking battleships into the area is another escalation in what seems to be a build-up to war. [C] 战列舰驶入这一地区是向战争发展过程中的又一次升级。