Recycled wastewater can also be used to help restore aquatic ecosystems harmed from over-extraction.
再利用废水也可以用于帮助恢复被过分压榨而受伤害的水中的生态系统。
2
Later on, things get worse: the outer ring of coffee starts to extract more evenly, but the increased flow through the central parts mean over-extraction begins.
外部的咖啡萃取更重，而中心部分的咖啡萃取就会由于水流太快而过度。
3
In addition to a tectonic factor in a few subsidence areas, the causes of the ground subsidence of Hebei plain are mainly related to concentrated over-extraction of ground water.