the+Mesozoic

  • Web中生代
1.
中生代
...90 两栖类出现 二叠纪 290-248 大灭绝 中生代(The Mesozoic)(爬虫类时代) 三叠纪 248-206 爬虫,恐龙、哺乳类出现 侏罗纪 …
www.100md.com|Based on 39 pages

Sample Sentence

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