We regret to inform you that your application has not been successful.

我们很遗憾地通知您，您的申请未通过。

《牛津词典》

This report was published in good faith but we regret any confusion which may have been caused.

发表这份报告出自诚意，但是我们对可能引发的任何混乱而感到遗憾。

《柯林斯英汉双解大词典》

youdao

Because you will come to regret it if you don't do it. But we're not going to grade it.

但是我们不会对此计分,因为不计分所以让你们。

麻省理工公开课 - 计算机科学及编程导论课程节选

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 regret that we have not been able to address your concerns to your satisfaction.

FORBES: How Amazon Can Make Your Kindle Content Vanish -- And Not Give You A Reason Why

"We know this and we regret it, but we have no choice, " he said.

BBC: Cheshire East Council 'faces ?16.2m overspend'

We regret any inconvenience and expect to send affected taxpayers a corrected letter by next week.

CNN: IRS erred on some tax refund letters; vows checks will be correct