Sulfur dioxide emissions and chemical oxygen demand kept falling, down 5.95% and 4.42% respectively, and this trend became more firmly set.

二氧化硫、化学需氧量排放量减少的势头得到巩固，全年分别下降5．95％和4．42％。

youdao

According to the study agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water) 67% of phosphorus and 57% of nitrogen discharges.

研究表明，水质43.7%的化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。

youdao

According to the study, agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water), 67% of phosphorus and 57% of nitrogen discharges.

研究表明，水质43.7%的国家化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。

youdao