钻心 (鑽心) zuānxīn
          
              zuānxīn 
              
              verb 
              to sneak in; to infiltrate; to be piercingly painful; to be unbearable (of pain, itch etc) 
              Domain: Literary Chinese 文言文
              
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                , Concept:  
              
              
              
                Notes: (CC-CEDICT '鑽心')