He feels no regret for his choice.

他对自己的选择无悔。

He has no regret about his decision.

他对自己的决定没有任何遗憾。

Even if he fails, he feels no regret.

即使失败了，他也无悔。

They feel no regret for their efforts.

他们对自己的努力无悔。

We should do things that make us feel no regret.

我们应该做让自己无悔的事情。

She said she feels no regret about her past decisions.

她说她对过去的决定无悔。

No sad, no resentment, no regret…

没有悲伤，没有怨恨，没有遗憾…

He felt no shame and no regret.

他不感到羞愧,也不感到遗憾.

I felt no regret for it.

对这件事我不觉得后悔.

Live a life of no regret.

过没有遗憾的人生