migratory birds

US 
UK 
  • un.候鸟类
  • Web迁徙的鸟;流动鸟群;移栖性候鸟
un.
1.
候鸟类

Sample Sentence

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