哺乳纲 (哺乳綱) Bùrǔgāng
          
              Bùrǔgāng 
              
              proper noun 
              Mammalia 
              Domain: Modern Chinese 现代汉语
              
                , Subdomain: Zoology 
              
              
                , Concept: Class 纲
              
              
              
                Notes: The class of mammals