a painted line running along the center of a road or highway that divides it into two sections for traffic moving in opposite directions,or,in the case of a divided highway,for lines of traffic moving in the same direction at different speeds是什么意思_a painted line running along the center of a road or highway that divides it into two sections for traffic moving in opposite directions,or,in the case of a divided highway,for lines of traffic moving in the same direction at different speeds在线翻译_英语_读音_用法_例句