A project to treat Huaihe, a highly polluted river, is under way, with the goal of eventually cleaning up the river by the year 2000.The Huaihe River, one of China's seven major rivers, originates...
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A project to treat Huaihe, a highly polluted river, is under way, with the goal of eventually cleaning up the river by the year 2000.The Huaihe River, one of China's seven major rivers, originates...