词汇	额外义务
释义	额外义务 extra duty
随便看	esophageal carcinoma cell esophageal carcinoma cell line esophageal carcinoma cells esophageal carcinoma/different method Esophageal carcinoma is a common malignancy esophageal carcinoma neoplasms esophageal carcinoma of cervical segment Esophageal carcinoma resection Esophageal carcinomas esophageal carcinoma stenosis Esophageal carcinoma surgery Esophageal carcinoma surgical esophageal carcinonla operation Esophageal carcinosectomy Esophageal carcioma Esophageal cardia cancer Esophageal-cardiac carcinoma esophageal cardiac gland esophageal-cardiac obstruction esophageal cardiogram esophageal career Esophageal careinoma Esophageal carinoma esophageal cast esophageal cavity