Rivers clean themselves quickly when pollution is not too great, so long as the water is moving and in contactwithplants, soil and rock.
在污染不太严重时,河水只要是流动的而且能接触植物、土壤、岩石,自身很快就会变清洁。
2
Unfortunately, the more industrialized we become the farther away we move from direct contactwithplants, and the less distinct our knowledge of botany grows.
不幸的是,工业化的程度越高,我们距直接与植物接触就越远,我们的植物学知识的增加也就越微不足道。
3
Unfortunately, the more industrialized we become the farther away we move from direct contactwithplants, and the less distinct our knowledge of botany grows.