sewer flushing

例句：

1. 1.The sewer flushing system is designed to remove waste from the city's storm drains.
   下水道冲洗系统旨在从城市的雨水排水系统中清除废物。
2. 2. After the flood, the sewer flushing process was crucial in restoring order to the city.
   洪水过后，下水道冲洗过程对于恢复城市秩序至关重要。
3. 3. The city has implemented strict regulations for sewer flushing to prevent pollution and improve public health.
   该市已实施严格的规定，以预防污染并改善公共卫生。