淡水稀缺、淡水污染。
随着大量含氮和磷的废水流入湖泊和江河，导致淡水污染现象日趋严重。
With the increase in discharging of waste water containing large amount of nitrogen and phosphorus to lakes and rivers, fresh-water pollution has been becoming a more and more serious problem.
随着大量含氮和磷的废水流入湖泊和江河，导致淡水污染现象日趋严重。
With the discharging of the waste water containing a large amount of nitrogen and phosphorus into the lakes and rivers, the pollution of the fresh water becomes more and more serious.
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