It causes both serious environment pollution and great coal waste since the old technologies and equipments in coal-burning and unreasonable supply of coal in various utilization.
由于燃烧技术落后，供煤不合理而形成煤炭利用率低和环境污染严重的燃烧现状。
Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery.
英国有大量的煤；然而，当时还没有有效的方法来产生机械能或为机器提供动力。
Wealth depends to a great extent upon a country's natural resources, such as coal, gold, and other minerals, water supply and so on.
一国财富在很大程度上受其自然资源影响，比如：煤炭、黄金或其他矿物质、水源等等。
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