例句 /

It is found that most surface water in Dongguan is contaminated, which has harmful influence on superficial layer groundwater, while the quality of deep level ground water is good.

It is found that most surface water in Dongguan is contaminated, which has harmful influence on superficial layer groundwater, while the quality of deep level ground water is good.

结果表明,东莞市大部分地表水污染严重,其结果使浅层地下水也受到了一定污染,深层地下水质尚好。