[概述]2﹒邀请考察（An invitation for investigation）

Dear Dr . . . .，I apologize for writing to you so late，but I am pleased to tell you that the Health Department of Xinjiang Uigur Autonomous Re‐gion has finally sanctioned your and Dr . . . . ’ s visit to Hetian at your own expense .我代表承德市政府邀请您和× × ×博士在200 ......