警方 / 加强 / 了 / 夜间 / 巡逻 / 以免 / 宵小 / 趁 / 商店 / 打烊 / 后 / 行窃警方加强了夜间巡逻,以免宵小趁商店打烊后行窃。The police increased nighttime patrols to prevent thieves from breaking in after the shops closed.