urban communication system

例句：

1. 1. The city is experiencing a surge in tourism during the summer months.
   这个城市在夏季旅游人数激增。
2. 2. The architecture of the city reflects its rich history and cultural heritage.
   这座城市的建筑反映了其丰富的历史和文化传统。
3. 3. The urban planners have been working tirelessly to improve the public transportation system.
   城市规划者一直在努力改善公共交通系统。