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单词 coal bed
释义

Definition of coal bed in English:

coal bed

noun
  • A stratum or layer of coal.

Origin

Mid 17th century; earliest use found in Henry Power (c1626–1668), natural philosopher and physician.

 
 

Definition of coal bed in US English:

coal bed

noun
  • A stratum or layer of coal.

Origin

Mid 17th century; earliest use found in Henry Power (c1626–1668), natural philosopher and physician.

 
 
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更新时间:2026/5/31 6:26:20