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Ordovician

US [ˌɔrdəˈvɪʃən]
UK [ˌɔ:dəˈviʃən]
  • n.奥陶系;【地】奥陶纪;奥陶时期;奥陶纪层
  • adj.【地】奥陶纪[系]的
  • Web奥陶世;O奥陶纪;古生代奥陶纪
n.
1.
【地】奥陶纪;奥陶系;奥陶时期;奥陶纪层
adj.
1.
【地】奥陶纪[系]的

Sample Sentence

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