Slovene ⇄ Arabic Basque Bulgarian Catalan Chinese Czech Danish Dutch English Estonian Finnish French German Greek Hungarian Irish Italian Latvian Lithuanian Maltese Norwegian Bokmål Polish Portuguese Romanian Russian Slovak Spanish Swedish Turkish Ukrainian

čiščenje preko kamnov
environ.	滴滤池 一个二级污水处理系统，类似水流的自我净化行为；更准确地说是一个生物氧化床；污水被置于池床里的石头上，水中存在的微生物吸食固体物作为食物。