coal
US /koʊl/
UK /koʊl/

1.
煤
a combustible black or dark brown sedimentary rock consisting mainly of carbonized plant matter, found in underground deposits and widely used as fuel.
:
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The train was powered by coal.
火車由煤提供動力。
•
Many power plants still burn coal to generate electricity.
許多發電廠仍然燃燒煤來發電。