air defense

US 
UK 
  • un.防空
  • Web空中防御奖章;对空防御;空中防御勳表
un.
1.
防空,对空防御

Sample Sentence

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