back numbers is back number's Plural Form

back number

US 
UK 
  • na.过期杂志;落后于时代的人
  • Web前面几期;过期期刊
Plural Form:back numbers  
na.
1.
过期杂志;落后于时代的人,老古董

Sample Sentence

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