煤炭在全世界有許多重要用途。最重要的用途是發(fā)電、鋼鐵生產(chǎn)、水泥制造和其他工業(yè)過程，以及作為液體燃料。

Coal has many important uses worldwide. The most significant uses are in electricity generation, steel production, cement manufacturing and other industrial processes, and as a liquid fuel.