prime meridian

US 
UK 
  • na.本初子午线
  • Web本初子午圈;起始子午线;原始子午线
na.
1.
本初子午线

Sample Sentence

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