Other possible benefits include a possible (but conjectural) decrease in chronic respiratory disease, reductions in damage to forests, improved visibility, and incidental reductions in carcinogenic emissions.

  • 其他可能的利益包括(据推测)慢性呼吸道疾病的减少,对森林破坏的降低,可见度的提高,以及致癌物排放的减少。
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