If you regret something that you have done, you wish that you had not done it.
例句
I simply gave in to him, and I've regretted it ever since...我就向他屈服了，從那以后我一直后悔。Ellis seemed to be regretting that he had asked the question...埃利斯好像后悔問了這個問題。
N-VAR
悔恨;失望;后悔;惋惜
Regret is a feeling of sadness or disappointment, which is caused by something that has happened or something that you have done or not done.
例句
My great regret in life is that I didn't bring home the America's Cup...我這輩子最大的遺憾就是沒有把美洲杯捧回家。Lillee said he had no regrets about retiring.利里說他沒后悔退休。
VERB
為…抱歉;很遺憾地說/通知你
You can say that you regret something as a polite way of saying that you are sorry about it. You use expressions such as I regret to say or I regret to inform you to show that you are sorry about something.
例句
'I very much regret the injuries he sustained,' he said...“我對他的受傷感到很遺憾，”他說。I regret that the United States has added its voice to such protests...我很遺憾美國也加入了這一抗議的行列。
N-UNCOUNT
抱歉；遺憾
If someone expresses regret about something, they say that they are sorry about it.
例句
He expressed great regret and said that surgeons would attempt to reverse the operation...他深表歉意，說外科醫(yī)生會努力消除手術(shù)造成的損傷。She has accepted his resignation with regret.她遺憾地接受了他的辭職。