I feel regret for it.

对此我深感抱歉。

youdao

One would feel regret for he hasn't cherished the truest love in front of him;

一个人会因自己没有珍惜眼前的真爱而后悔；

youdao

There is not only one road leading to happiness, so I don't feel regret for her.

幸福的道路不止一条，所以我一直不为梅艳芳遗憾。

youdao

"We feel pain and regret for anyone who reports to have been harmed while a student at Horace Mann School, " board Chairman Steven Friedman wrote in a public letter in August.

WSJ: Bronx District Attorney Finds Abuse 'Pattern' at Horace Mann

For the most part, the team are finding that Irish Americans do not regret emigrating, and feel proud of their own children's education and prosperity.

BBC: Tony Gallagher