[概述]4﹒探讨系际交流的可能性（Exploring possibility of a Dept.to Dept.exchange program.）

Dear Prof . . . .，Professor . . .，who arrived two days ago，has forwarded to me your kind letter of December 20，2000 .It will be a great pleasure to have you visit us on your next trip to Chengde .亲爱的× × ×教授：两天前刚回国的× × ×教授已将您2000年12月20日的信转交给我，十分高兴地得知您将到承德访 ......