A moment’s error can bring a lifelong regret.

一足成千古。

Letting her friend borrow her car was an impulsive act that she immediately regretted.

友借走她的车是她立刻就感到后悔的冲动行为。

I have no regret about leaving.

我对离去一事毫后悔。

I regret my ignorance on the subject.

我很遗憾, 对此问题一无所知。

I regret to say you are wrong.

十分抱歉, 你错了。

I have had four acceptances and one regret.

我已收到了四张应邀帖和一张辞谢帖。

I declined with much regret your kind invitation.

很遗憾, 我能接受您的盛情邀请。

I regret what I've done to her.

我后悔该那么对她。

I regret that you see it like that.

我很遗憾你那样看这件事。

I regret that I am unacquainted with the place.

很遗憾我对这地方熟悉。

They regretted agreeing to the convocation of that meeting.

他们后悔同意召开这个会议。

I regret to say that he is badly ill.

很遗憾他病得很重。

China regrets the abrogation of the Anti-Ballistic Missile Treaty.

中国对《反弹道导弹条》感到遗憾。

I regret to say we're diametrically opposed to your ideas.

很遗憾我只好说我们完全同意你们的意见。

She felt sudden pangs of regret.

她突然感到痛悔已。

You'll regret this.

这事你将会后悔的。

I regret selling the house.

我后悔卖了房子。

Due to the vicelike technology and sufficient self-confidence,we will never make you regret for your choice.

我们以坚实的技术底蕴和充分的自信，您在对我们的加工产品作出选择之后生悔意。

If he plays fast and loose with my daughter’s feelings, I’ll make sure he regrets it.

如果他玩弄我女儿的感情，我一定会他后悔的。

Please extend my regrets to his majesty. I bid you farewell, arrivederci, sayonara, and all that sort of jazz.

请对陛下夸张我对他的威严的遗憾。我叫你告别，再见，再见，和所有那爵士乐。