正壁 zhèng bì
          
              zhèng bì 
              
              noun 
              the back wall; the rear wall 
              Domain: Modern Chinese 现代汉语
              
              
              
              
               
          
          
          
              zhèng bì 
              
              noun 
              the back wall; the rear wall 
              Domain: Modern Chinese 现代汉语