下水道的水在卫生处理惩罚厂担当最初的清理,清除固体废料,添加有益的细菌解析处理惩罚过的人类废料。
Sewer water undergoes initial cleansing at a sanitation plant to remove solid waste and add beneficial bacteria that break down sludge.
下水道的水在卫生处理惩罚厂担当最初的清理,清除固体废料,添加有益的细菌解析处理惩罚过的人类废料。
Sewer water undergoes initial cleansing at a sanitation plant to remove solid waste and add beneficial bacteria that break down sludge.
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