目前,在资本主义国家,“公害”大肆泛滥,触目惊心,成为日益严重地威胁人们生存的社会问题。据外国报纸透露,在美国,每年约有两亿吨污染物飞到空中。许多城市,笼罩着一片浓烟毒雾,有些居民,因空气污染而中毒死亡。由于大量工业废水的注入,半个美国的河水变成毒水,发生了“饮水危机”;美国五大湖泊之一的伊利 At present, in capitalist countries, “public nuisance” has spread so aggressively that it has become a social problem that threatens people’s lives more and more seriously. According to foreign newspapers, in the United States, about 200 million tons of pollutants fly into the air every year. Many cities, enveloped in a thick smoke fog, some residents died due to air pollution and poisoning. As a result of a large number of industrial wastewater injection, half of the United States into a poisonous river water, the occurrence of “drinking water crisis”; one of the five major US lakes Erie