urban transportation短语¹⁴⁴⁹⁷²⁺² 基本例句 城市交通运输,市区运输 上下班高峰期 Compared with cities in eastern China, infrastructures in many cities in western China are poor, andurban transportationin those cities must be speedily improved.与东部地区城市相比,我国西部地区许多城市基础设施条件较差,城市交通运输亟待改善。