对已经做过的事后悔是没有用的。

It's useless to regret what has been done.

youdao

哼，即使做这件事的人是公爵的儿子，他也要后悔的！

Now though the doer of it be a duke's son he shall rue it!

youdao

“我真希望当初是这样想的，”汤姆后悔地说，“不过，我梦见过你。”

"I wish now I'd thought," said Tom, with a repentant tone, "but I dreamt about you, anyway."

youdao

they regret the things as a rule that they didn't try.

他们统一后悔的都是没有尝试过的事。

耶鲁公开课 - 心理学导论课程节选

And he says on page 884: A poet writes always of his personal life, in his finest work out of its tragedies, whatever it be, ; remorse, lost love or mere loneliness; he never speaks directly as to someone at the breakfast table there is always a phantasmagoria.

84页他说道：,诗人总写自己的生活，最好的作品总是悲剧，不管是后悔，失恋或孤独;,这是他不会在餐桌上讲的,总是有这样一种幻境。

耶鲁公开课 - 现代诗歌课程节选