He began by snapping photos of factories dumping untreatedeffluent into canals. He mailed them, anonymously at first, to environmental protection agencies.
他开始把工厂向运河排放没有处理的污水拍成照片，匿名寄给环保局。
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Ramesh says India has undertaken a 10-year program to ensure no untreated industrial effluent or urban sewage is released into the country's main river, the Ganges.