surface filtration

例句：

1. 1.The surface filtration process is crucial for maintaining the cleanliness of water.
   表面过滤过程对于保持水的清洁至关重要。
2. 2. During the filtration process, the water is passed through a series of filters to remove impurities.
   在过滤过程中，水通过一系列过滤器去除杂质。
3. 3. The filtration system is designed to remove bacteria and other harmful substances from the water.
   该过滤系统旨在从水中去除细菌和其他有害物质。