blue paper

US 
UK 
  • un.化钡
  • Web蓝皮书;蓝晒纸;蓝纸
un.
1.
化钡

Sample Sentence

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