Don't be so mean.

不要这么小气。

youdao

Don't be so mean to your little brother.

对你的小弟弟不要如此刻薄。

《新英汉大辞典》

Just this once. Don't be so mean.

就着一次啦，别这么凶嘛！

youdao

So although the New Critics were fed up with philological criticism, I don't mean to be condescending toward it or to suggest that it didn't play a crucially important role in the evolution of literary studies.

所以，虽然新批判主义,对语言学批判主义不满，但是并不是要否认语言学批判主义,在文学研究发展过程中,起到的重要作用。

耶鲁公开课 - 文学理论导论课程节选

So those of you who haven't, don't worry, I mean this will be a bit review, but we'll see it more through the eyes of Game Theory this time, and for those of you who haven't, don't worry we're going to go through it.

如果你没学过,也不必担心,我们一起来快速回顾一下吧,但这次我们用博弈论的角度去分析,那些之前没有学过的同学,别担心,现在我们一起来看一遍

耶鲁公开课 - 博弈论课程节选

Mr. PHILLIPS: Well, I - you know, to his credit, I mean, he - and I don't mean to be so disparaging of him as governor.

NPR: Romney Finds No Place Like Home