the act of building raised areas, small roundabouts, or other similar structures on roads, usually r

中文解释

交通缓行措施，减缓机动车速措施（通常在沿线有住宅区的道路上设置凸面、小环岛或其他类似设施，迫使车辆减速） [ before noun ] traffic-calming measures 交通缓行措施