She has not shown any real regret for what she did.

她对自己做过的事还没有表现出真正后悔的样子。

《牛津词典》

I deeply regret what I said.

我非常后悔说了那些话。

《牛津词典》

They will bitterly regret what they have done for ever more.

他们今后将痛悔他们所做过的事情。

《柯林斯英汉双解大词典》

What, you think I regret saving you? I can see that you do.I just... I don't know why.

VOA: standard.other

And it turns out that if you actually ask dying people, or really old people basically, "What do you regret from your life?"

结果发现，如果你问临终的人，或者很老的人，“你生命中有什么让你很后悔的？”

耶鲁公开课 - 心理学导论课程节选

We're all going to die and we're all going to regret what we did.

我们终将死亡，为我们的所为而后悔。

耶鲁公开课 - 现代诗歌课程节选

We deeply regret what happened and are working tirelessly to regain the trust of our community.

FORBES: Blippy Apologizes For Google-Searchable Credit Cards, Announces New Security Plan

The "nation will live to regret what the court has done today, " Scalia said.

CNN: Justices: Gitmo detainees can challenge detention in U.S. courts

Most Japanese regret what a militaristic Japan did to China in the 1930s and 1940s.

ECONOMIST: Terri Schiavo