I deeply regret what I said.

我非常后悔说了那些话。

《牛津词典》

I deeply regret not moving to Australia when I was married there 25 years ago.

很遗憾二十五年前在澳大利亚结婚时没有搬过去。

youdao

We can only deeply regret this unfortunate misunderstanding, and assure you of our unfailing regard.

对此不幸误会，同仁等深以为憾，谨对先生再申敬佩之忱，并致谢意。

youdao

It is something they now deeply regret, because,she says,"the promises of the Orange Revolution were not kept."

VOA: standard.2010.02.14

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

We deeply regret that the old Germany, with its successful and assimilated Jews, will never exist again.

ECONOMIST: Charlemagne

"I deeply regret this and am very sorry for my behavior, " Domenici, 80, said in his statement.

NPR: Domenici Acknowledges Having Son Outside Marriage