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.

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。

youdao

Then that reader can skip the proof of Lemma 15 'completely, and not have to deal with B at all.

这样读者就可以完整地跳过引理15 '，完全不必关心B了。

youdao

I was a careful proof-reader in those days.

（其实）那个时候的我是一个认真的校对员。

youdao