铁水沟

例句：

1. 1. The iron water channel is a crucial part of the transportation system.
   铁水渠道是交通系统的重要组成部分。
2. 2. The iron water channel was built to improve the efficiency of the water supply.
   铁水渠道的建造是为了提高供水的效率。
3. 3. The iron water channel is prone to corrosion and needs regular maintenance.
   铁水渠道容易腐蚀，需要定期维护。