sewer sluice valve

例句：

1. 1. The sewersluice valve was damaged during thestorm.
   暴风雨期间，下水道闸阀受损了。
2. 2. The maintenance crew replaced the old sewer sluice valve with anew one.
   维修队用一个新的来替换旧的下水道闸阀。
3. 3. Theengineer inspected the sewer sluice valveto ensure it was functioning properly.
   工程师检查了下水道闸阀，确保其正常工作。