urban problem的用法和樣例：
例句
- Urban problems revolve around meeting the needs of the existing inhabitants and replacing old and obsolete facilities, especially housing.
城市問題應考慮滿足現有居民的需要以及更換那些老式而陳舊的設施，尤其是住宅。 - A number of discussion sessions are scheduled throughout the course to further address the critical and paradigmatic architectural and urban issues.
為了深入討論重要的和舉例說明的建築和城市問題，在整個課程之中將安排數次討論課。
