fine coal

例句：

1. 1.The mine is producing a lot of fine coal.
   这个矿正在生产大量的细煤。
2. 2.Fine coal is used in the production of steel.
   细煤用于钢铁的生产。
3. 3.The company uses fine coal as fuel for its power plant.
   该公司使用细煤作为其电厂的燃料。