self purification process

例句：

1. 1.The self-purification process helps to eliminate harmful bacteria from the water.
   自我净化过程有助于从水中去除有害细菌。
2. 2. In the self-purification process, the wastewater is treated and then released back into the environment.
   在自我净化过程中，废水经过处理后重新释放到环境中。
3. 3. The self-purification process is crucial for maintaining cleanliness in hospitals and other healthcare facilities.
   自我净化过程对于医院和其他医疗机构保持清洁至关重要。