ordinary mail

US 
UK 
  • un.平信
  • Web平常邮件;平邮;普通邮件
un.
1.
平信

Sample Sentence

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