这种化学污染有两个来源：直接把污水倒进河里的工厂，和把未经处理的人类垃圾倒进河里的本地社区。
This chemical pollution has two sources: the factories which dump polluted water directly into the river and the local community which dumps untreated human wastes into the river.
人类每日会产生大量的垃圾，大量的垃圾未经分类回收再使用并任意弃置会造成环境污染。
Humans produce abundant rubbish every day, which can cause pollution if it is abandoned at will without recovery and recycling.
由于工业企业和城市排水系统直接向江中排放大量未经处理的污水和雨水，使柳江受到污染。
The Liujiang is polluted because industries and the city drainage system directly discharge into it significant raw sewage and rainwater.
作为柳州市工业和居民生活用水主要水源的柳江则受到部分未经处理的污水和雨水排放污染。
The Liujiang River, which is the main source of drinking and industrial water use of the city, suffered from pollution from untreated sewage and rainwater flows.
养猪场排放的大量废水，大多未经妥善回收利用与处理即直接排放，对环境造成严重的污染。
A large amount of wastewater from piggery farm is mostly discharged directly without appropriate recycle and treatment, which can bring about a serious pollution to the environment.
细菌的来源包括没有煮熟的农作物、生牛奶、未经高温消毒的果汁、受污染的水源或肉，特别是煮得不熟或者是生的汉堡。
Sources sof the bacterium include uncooked produce, raw milk, unpasteurized juice, contaminated water and meat, especially undercooked or raw hamburger.
废水未经沉淀，夹渣排放；某稀土厂废水是污染负荷的主要因子。
The reason is that waste water was discharged before the precipitation.
造纸黑液由于量大、COD高，是造纸废水中的主要污染源，未经处理的黑液对环境会产生极大的危害。
Because of the large quantity and high COD value, the black liquor of paper making industry is an important source of environmental pollution.
大量未经处理的污水排入城市水体，导致城市水体严重污染。
The water in city will be badly polluted if too much untreated wastewater is drained into it.
但是现在这条江已经被附近的工厂污染了，工厂向江里倾倒未经净化的又脏又毒的水。
But now the river has been polluted by the factories nearby. They pour dirty and poisonous water into the river without any purification.
造成水体污染的因素是多方面的：向水体排放未经过妥善处理的城市生活污水和工业废水；
Water pollution caused by many factors: the body of water without proper treatment of urban domestic sewage and industrial waste water;
上游未经处理排出的废污水，造成下游河道污染；
Downstream of the upstream water too much, cause water shortage, block;
上游未经处理排出的废污水，造成下游河道污染；
Downstream of the upstream water too much, cause water shortage, block;
应用推荐