city trench

例句：

1. 1.The city trench was filled with rubble and debris.
   城市隧道里堆满了瓦砾和碎片。
2. 2. The construction of the new subway line will require excavating a city trench.
   新地铁线的建设将需要挖掘一个城市隧道。
3. 3. The city trench is now closed for maintenance work.
   城市隧道现在因维护工作而关闭。