kngqi, 空气, river, 河, environment, 环境, factory, 工厂, sewage, 污水, black, 黑色, industry, 工业, garbage, 垃圾, odor, 气味, economy, 经济, awareness, 意识, nature; natural, 自然, to change; change, 变化, to pollute, 污染, to build, 建, to discharge, to blow off, 排放, to care, 关心, to develop; development, 发展, to be short of, to lack, 缺乏, to damage, 破坏

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