诺里尔斯克（西伯利亚西北部城市）
Norilsk, where metals are extracted , and Dzerzhinsk , home to weapons manufacture, are Russia's most polluted locations.
金属冶炼中心诺里尔斯克和武器制造基地捷尔任斯克, 是俄罗斯污染最严重的地区.