urban communications的用法和樣例：
例句
- The level of motorization is the important symbol to transportation, especially to urban traffic.
機動(dòng)化水平是交通運輸，尤其是城市交通發(fā)展的重要標志。 - The trend of urban traffic mechanization has a great impact on traditional bicycle traffic.
城市交通機動(dòng)化的趨勢對傳統的自行車(chē)交通產(chǎn)生了較大的沖擊。
