n.過(guò)濾；浸透
In fact, knowledgeable scientists of the time accepted land irrigation and percolation into the porous underground formations as methods of waste treatment. 事實(shí)上，當(dāng)代有見(jiàn)識(shí)的科學(xué)家，已經(jīng)接受了土地清洗以及過(guò)濾可滲透地底層這兩種可作為處理廢棄物治理的方法。
