coal

For decades, the local power plant burned coal to generate electricity for the entire city.

(Chinese) 几十年来，当地发电厂通过烧煤为整个城市供电。

Miners spent long hours underground extracting high-quality coal from the narrow seams.

(Chinese) 矿工们在地下花费很长时间从狭窄的煤层中开采优质煤炭。