许多制糖工厂在现场运行石灰窑以生产净化过程所需的生石灰和二氧化碳。
Many sugar beet plants are operating lime kilns on-site to produce both the quicklime and the carbon dioxide required for the purification process.
水泥体积庞大而又价格低廉，在既靠近提供重要原料的石灰石矿场又靠近客户的大型工厂生产水泥是明智的选择。
Cement is bulky and cheap. It makes sense to produce it in vast plants close both to limestone quarries, which provide a vital raw material, and to customers.
科学家们认为多数食品将是人工制造的——在工厂里由令人吃惊的原料如煤、石灰石、空气、水加工而成。
Scientists think that much of it will be artificial-made in factories from such surprising things as coal, limestone, air, and water.
科学家们认为多数食品将是人工制造的——在工厂里由令人吃惊的原料如煤、石灰石、空气、水加工而成。
Scientists think that much of it will be artificial-made in factories from such surprising things as coal, limestone, air, and water.
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