natural purification meaning in English
自净作用
自然净化作用
Examples
- Since the netherlands is located at the very end of the rhine river , the water must first be subjected to advanced treatment , then injected underground for several months of natural purification before it can be used
荷兰处于莱茵河最下游，须以高级处理，甚至再灌注于地下，经地层自然净化数月后再用。 - The arrangement is to maintain a favourable ecological balance and good water quality through natural purification in the reservoirs where fish play an effective role in controlling algal proliferation
有关安排旨在令水塘中生长的鱼类有效地控制水藻及浮游植物的数量，确保水塘的生态环境得到平衡，以及透过自然净化，令水质优良。