So with apologies for being a bit more boring for twenty minutes, let's do something we'll call formal stuff.

抱歉接下来的二十多钟分可能有点枯燥,我们来做点正经事

耶鲁公开课 - 博弈论课程节选

There's actually a lot of real, you know, there's real people here with, you know, real jobs and things like that.

其实有好多正经的人，做正经的工作。

好莱坞的真面目 - SpeakingMax英语口语达人

They said they were important for pious instruction.

他们称需要从自己的正经里去除次经。

耶鲁公开课 - 旧约导论课程节选