underwater tunnel

US 
UK 
  • un.水下隧洞
  • Web水底隧道;水下通道;水地隧道
un.
1.
水下隧洞

Sample Sentence

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