water supply tunnel

例句：

1. 1. The city has built several water supplytunnels to improve its water supply system.
   该市已建造了数个供水隧道，以改善其供水系统。
2. 2. The constructionof the water supply tunnel is expected tostart next month.
   预计供水隧道的建设将于下个月开始。
3. 3. The water supply tunnel is acrucial part of the city's infrastructure.
   供水隧道是该市基础设施中至关重要的一部分。