求翻译：由于长期受到工业、农业、畜禽养殖业以及生活污水和垃圾的污染，水质恶化，部分河段的河水发黑发臭并伴有富营养化现象，目前属于V类、劣V类水体。是什么意思？

Long-term industry, agriculture, livestock and poultry breeding industry, and sewage and garbage pollution, deterioration of water quality, the part of the river water black smelly and associated with eutrophication, are v class, inferior v water body.

Because of the long-standing by the industrial, agricultural, livestock and aquaculture, as well as sewage and garbage pollution, degradation of water quality, river section of the river, and accompanied by a black smelly eutrophication phenomena, which is currently V V class, such as water.

Because receives the industry, agricultural, the poultry fish breeding and poultry raising as well as the sanitary sewage and trash pollution for a long time, the water quality worsens, the partial section of river river water becomes dark becomes stale and is accompanied by the eutrophication pheno

Due to long-term industrial, agricultural, livestock and domestic sewage and waste pollution, the deterioration of water quality, some black stink and eutrophication of the River reach, now belonging to the v class, v class of inferior quality water.

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