我觉得特别有必要把以上这一点强调一下，这是因为我曾经有过一次很尴尬的经历。 这次经历也非常深刻地证明了刚才我跟大家谈到的这一点。

I feel the more inclined to emphasise this caution because I once had a rather embarrassing and pointed proof of its desirability, -- which I relate for the enlightening of the reader.

youdao

我的头像很好的证明了这一点。

My avatar is a good representation of that.

youdao

我想我已经证明了这一点。

And I think I've shown that.

youdao

But some things seem to be indisputable, for instance, if I say we won the battle I can prove that to you most of the time.

但有些东西还是没有争议的,举个例子,我说我们赢得了战役,我可以证明这一点

耶鲁公开课 - 古希腊历史简介课程节选