two level

US 
UK 
  • un.双层
  • Web二阶层;两电平间跳变;两个阶层
un.
1.
双层

Sample Sentence

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