- air pollution control空气污染控制;
- air pollutionn.空气污染;
- environmental pollution环境污染;
- light pollution光污染;
- noise pollutionn.噪音污染;
- poverty reduction减缓贫困;
- reduction or cancellation of debts减轻债务负担;
- reduce pollution降低污染;
- sound pollutionn.噪音污染;
- white pollution白色污染;
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