A daily input of water, food, and energy of various kinds is matched by an output of sewage, solid waste, air pollutants, energy, and materials that have been transformed in some way.

日常摄入的水、食物和各类能量与输出的污水、固体废物、空气污染物、能源和经过某种转化的物质相匹配。

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Moreover, during the past two decades, China has used pollution charges and other measures to keep both air and water pollution levels constant even as economic output has doubled.

中国在过去20年利用污染收费制和其他措施，在经济产出增长一倍的情况下使空气和水污染问题没有进一步恶化。

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The OECD cites a finding that air pollution alone reduces the country's output by between 3% and 7% a year, mainly because of respiratory ailments that keep workers at home.

经济合作与发展组织(OECD)引证了一个发现：单是空气污染就使该国的产出一年减少了3%到7%，主要是因为呼吸性疾病使工人们呆在家中。

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