upper level

US 
UK 
  • un.上游水位;上部水平
  • Web高级;上层;上水平
un.
1.
上游水位
2.
上部水平

Sample Sentence

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