It is mostly agricultural irrigation that is driving the increase, because it accounts for 70 to 80 percent of global groundwater usage.

这主要是农业灌溉是推动了这一增长，因为灌溉占全球地下水用量的70%至80%。

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They have a variety of technical articles, mostly related to irrigation and water treatment, available for free download in the "Library" section of their site.

网站的“图书馆”有各种专业文章，大部份与灌溉和水处理相关，免费下载。

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Datong City's sewage water is mostly untreated or is not up to the standard after treating, and then directly drains into river for irrigation, the agriculture eco-environment is seriously affected.

大同市污水大都未经处理或处理不达标，直接排入河道用于灌溉农田，对农业生态环境造成严重的影响。

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