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单词 soft coal
释义

soft coal

noun [mass noun]
Bituminous coal.In a city known for soft coal and nuclear energy, city leaders have put a lot of thought and effort into trying to develop the downtown area into a green environment....
  • My paternal grandfather, a Swedish immigrant/coal miner at that time, lay on his side in a vein of soft coal with a pick and shovel.
  • Coke is nearly pure carbon produced when soft coal is heated in the absence of air.
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更新时间:2025/2/22 21:16:59