sewer man-hole

例句：

1. 1. The sewer man-hole was filled with garbage and debris.
   下水道井里堆满了垃圾和杂物。
2. 2. The city needed to fix the sewer man-holes before the rainy season.
   在雨季来临之前，城市需要修理下水道井。
3. 3.The sewer man-hole is a crucial part of our wastewater treatment system.
   下水道井是我们废水处理系统的关键部分。