青云翻译

Subject to a certain extent, the majority of urban groundwater pollution, and increasing year by year trend.

Some pollution of groundwater in most cities, and there is increasing year by year trend.

The most city ground water is polluted certain degree, and has year by year the aggravation tendency.

Most of the urban groundwater has been polluted to a certain degree, and there is a yearly worsening trend.

Some pollution of groundwater in most cities, and there is increasing year by year trend.