coal: 意味と定義

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coalとは何ですか?

coalとは何ですか?

  • A natural dark brown to black graphitelike material used as a fuel, formed from fossilized plants and consisting of amorphous carbon with various organic and some inorganic compounds.
  • A piece of this substance.
  • A glowing or charred piece of solid fuel.
  • Charcoal.
  • To burn (a combustible solid) to a charcoal residue.
  • To provide with coal.
  • To take on coal.

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