water purification

US 
UK 
  • un.水的净化
  • Web水净化;水质净化;净化作用
un.
1.
水的净化

Sample Sentence

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