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traffic light
mass transit card transport hubtraffic light /signal
红绿灯traffic lightsYou must be careful with the traffic lights when you cross the road.你过马路时一定要注意红绿灯。
红绿灯 [词典] traffic light; traffic signal; traffic lights; [例句]在刚过巴尔比环岛的地方,有一个临时红绿灯。Just past the Barlby roundabout there's temporary traffic lights.
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