a feeling of sadness about something sad or wrong or about a mistake that you have made, and a wish that it could have been different and better

I left school at 16, but I've had a great life and I have no regrets. 我16岁就辍学了，但是我的人生很成功，我没有什么可遗憾的。

The manager expressed deep regret at/for the number of staff reductions. 被裁减的员工人数众多，对此经理深表遗憾。

We think, much to our regret (= and we are very sorry about this), that we will not be able to visit you next year. 我们觉得，明年可能没法到你们家去做客了，真是遗憾。

to send a polite message that you cannot go to a party, etc.

We did have an invitation, but we had to send Graham our regrets. 我们确实收到了请柬，但是我们脱不开身，不得不向格雷厄姆致歉辞谢。

Daniel was unwell at the time so we sent our regrets.

I think we might have to send our regrets.

The couple were indisposed so sent their regrets.

The President, it was reported, had sent the Prime Minister his regrets.

He thanks you for your kind invitation but sends his regrets.

to feel sorry about a situation, especially something sad or wrong or a mistake that you have made

Is there anything you've done in your life that you regret? 你一生中做过什么令你感到懊悔的事情没有？

[ + -ing verb ] I have always regretted not having studied harder at school. 我总是后悔在学校时没有更加努力学习。

[ + (that) ] formal The council regrets (that) the money to subsidize the youth club is no longer available. 市政会因为无法再向青少年俱乐部提供资助而深表遗憾。

[ + to infinitive ] formal British Airways regret to announce the cancellation of flight BA205 to Madrid. 英国航空公司非常抱歉地通知，飞往马德里的 BA205 次航班取消了。