coal coke

例句：

1. 1. The mine producesa large amount of coal every year.
   这个矿每年生产大量的煤炭。
2. 2. Coal is the main source of energy for many countries.
   煤炭是许多国家的主要能源来源。
3. 3.Coal mining has been a major industry in China for centuries.
   煤炭开采在中国几个世纪以来一直是主要产业。
4. 1.The factory produces high-quality coke for export.
   这家工厂生产高质量的焦炭用于出口。
5. 2.Coke is used as a fuel in power plants.
   焦炭用作发电厂的燃料。
6. 3.The process of making coke involves heating and carbonizing wood chips.
   制焦的过程涉及加热和碳化木屑。