"Prevent others from disturbing public order" 或 "Stop others from causing a disturbance to public security" 都可以表达“阻止别人扰乱治安”的意思。其中,“prevent/stop sb. from doing sth.” 是常用的表达结构,意为“阻止某人做某事”;“disturb public order” 或 “cause a disturbance to public security” 则表示“扰乱治安”。