anthracite coal

US 
UK 
  • un.无烟煤
  • Web煤炭;无烟煤层
un.
1.
无烟煤

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard