水体中的镉污染主要来自于电镀厂、有色金属冶炼厂和矿山的废水排放。
Wast waters containing dissolved cadmium come from many sources such as electroplating industries, nonferrous metals smelting, mine tailing.
这些受害者目前正在临近陕西省的一家医院治疗．金属冶炼厂已经被拆除。
They are being treated at a hospital in neighboring Shaanxi province. The smelting plant has been torn down.
污染源已被查明是广泛存在贫困的甘肃省一个金属冶炼厂，就在受害者居住的地区。
The pollution has been traced to a metal smelting plant in poverty-stricken Gansu province, where the victims live.
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