克莱因 (克萊因) kèláiyīn
          
              kèláiyīn 
              
              proper noun 
              Klein or Kline (name) / Felix Klein 
              Domain: History 历史
              
                , Subdomain: Europe 
              
              
                , Concept: Person 人
              
              
              
                Notes: 1849-1925; German mathematician (CC-CEDICT '克萊因')