traffickey是什么意思

信息量键

1. Efficiency in managing traffic congestion is the traffic key to a sustainable city.
管理交通拥堵的效率是建设可持续城市的关键。
2. The traffic police officer used his traffic key to control the flow of vehicles at the busy intersection.
交通警察在繁忙的十字路口使用他的导码器来控制车辆流动。

交通关键；（英国）交通警察手中使用的导码器；指挥交通的要点