urban transportation的用法和樣例：
例句
- The level of motorization is the important symbol to transportation, especially to urban traffic.
機動化水平是交通運輸，尤其是城市交通發展的重要標誌。 - Compared with cities in eastern China, infrastructures in many cities in western China are poor, and urban transportation in those cities must be speedily improved.
與東部地區城市相比，我國西部地區許多城市基礎設施條件較差，城市交通運輸亟待改善。
