extra fee额外费用extraadj.额外的n.额外之物；临时演员adv.特别地Extracorporeal shock wave therapy体外冲击波治疗Extra-esophageal manifestations食管外症状extracorporealshockwavelithotripsy体外冲击波碎石术extra-large deep foundation pits超大深基坑Extra Low Hardness Urethane Sheetsextra -large roller type support特大型滚动支承Extrahepatic bile duct obstruction肝外胆管梗阻extra-low permeability reservoir特低渗透油藏extraperitoneal rupture of bladder腹膜外膀胱破裂extracorporeal circulation machine体外循环机