污染固然要对付,太清洁有时也是烦恼,瑞典维纳恩湖便是一例。这个饱受污染的瑞典第一大湖经过多番清理,现在却干净得连鱼儿也活不了。生态学家警告说,如果不立刻减慢维纳恩湖的滤水工作,这个比卢森堡还要大的湖将成为死湖一个。维纳恩湖供应瑞典三分之一食水,一度受沿岸工厂排出的重金属及有机化合物严重污染。20年来,政府设立多所过滤厂,清洁湖水,又立例规定化工厂、纸品 Pollution, of course, to deal with, too clean and sometimes troubled, Sweden Lake Vänern is an example. The polluted first largest lake in Sweden, after many clean-ups, is nowhere clean and clean with fish. Ecologists warned that this lake, which is bigger than Luxembourg, will become a dead lake if it does not slow down the drainage of Lake Vänern immediately. Lake Vänern supplies one-third of Sweden’s fresh water and was once heavily polluted by heavy metals and organic compounds exiting the coastal factories. In the past 20 years, the government set up a number of filtration plants to clean the lake and legislated for chemical plants, paper products