在煤的加工利用过程中，煤中金属元素进入大气、水体和土壤，以致污染环境，这是人们关心的事。
During the production and use of coal, the metal elements in coal get into the air, the water and the soil, causing environmental pollution, which is what people concern with.
我父母在家里的煤窖上面有个袖珍厨房，他们在里面加工面粉混合物，切洋葱和鱼块，任何可以吃的东西他们都做。
At home, my parents would be in the tiny kitchen above the coal cellar, fashioning out concoctions of flour, chopped Onions, bits of fish, anything they could get their hands on.
煤沥青原料的纺丝，是碳纤维制造过程中加工成型的关键步骤。
The spinning of coal tar pitch raw material is key procedure of shaping in manufacturing carbon fiber.
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