名词
中文翻译：未加工的煤
同义词：
['raw coal', 'unprocessed coal']
例句：
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1.The mine produces a significant amount of unsized coal every year.
这个矿每年生产大量的未加工煤。
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2.The company is looking to invest in new technologies to improve the quality of their unsized coal.
该公司正在寻求投资新技术，以提高其未加工煤的质量。
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3.Unsized coal is often used as fuel for power plants due to its low cost and high energy content.
由于成本低廉且能量含量高，未加工煤常被用作发电厂的燃料。