| 单词 | bottom coal |
| 释义 | Definition of bottom coal in English:bottom coalnoun
OriginMid 17th century; earliest use found in Dud Dudley (?1600–1684), ironmaster. Definition of bottom coal in US English:bottom coalnoun
OriginMid 17th century; earliest use found in Dud Dudley (?1600–1684), ironmaster. |
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