隧洞 suìdòng
          
              suìdòng 
              
              noun 
              tunnel 
              Domain: Modern Chinese 现代汉语
              
              
              
              
                Notes: (CC-CEDICT '隧洞')
              
               
          
          
          
              suìdòng 
              
              noun 
              tunnel 
              Domain: Modern Chinese 现代汉语
              
              
              
              
                Notes: (CC-CEDICT '隧洞')