脱皮掉肉 (脫皮掉肉) tuōpí diào ròu
          
              tuōpí diào ròu 
              
              set phrase 
              to shed skin, drop flesh; to work as hard as possible; to work one's butt off 
              Domain: Modern Chinese 现代汉语
              
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                , Concept:  
              
              
              
                Notes: (CC-CEDICT '脫皮掉肉')