为检验酸性化过程对全球的影响，研究者们描绘出一系列世界地图来展示近期煤炭利用、营养消费和铜矿生产、冶炼的国家。
To examine the global impact of acidification, the researchers developed a series of world maps to show current coal use, nutrient consumption, and copper production and smelting by country.
为检验酸性化过程对全球的影响，研究者们描绘出一系列世界地图来展示近期煤炭利用、营养消费和铜矿生产、冶炼的国家。
To examine the global impact of acidification, the researchers developed a series of world maps to show current coal use, nutrient consumption, and copper production and smelting by country.
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