He accepts an invitation to speak at Gttingen University, essentially, a dress rehearsal for the Prussian Academy.

他接受了哥廷根大学的邀请发言,从本质上讲,这是一次为普鲁士学院的彩排。

When I first received the invitation to speak at your commencement ceremony, I thought back to my own graduation many, many years ago and you know what?

当我最初接到在贵校毕业典礼上讲话的邀请时， 我回想起了许多年前自己毕业时的情景。你们知道吗？