We regret to inform you that you are being furloughed indefinitely.

我们遗憾地通知你：你被无限期地停职了。

《柯林斯英汉双解大词典》

Before you get carried away with your little scene, Miss Wenzmore, I regret to have to tell you again that we are not planning to go into television.

在你被你的小场景冲昏头脑之前，温兹摩尔小姐，我很遗憾地再次告诉你，我们不打算进入电视行业。

youdao

If that plane leaves the ground and you are not with him, you regret it maybe not today, maybe not tomorrow, but soon and for the rest of you life.

如果飞机起飞了，而你不是和他在一起，你会后悔的，也许不是今天，也许不是明天，但很快你就会后悔，而且是抱憾终身！

youdao

Some people lack empathy permanently, others switch it off when they are tired, stressed or impatient telling a child not to bother you because you are working, for example and experience regret for their harsh words when their empathy returns.

ECONOMIST: Morality and the brain: Medical diagnosis of malfeasance | The

What you will see in the show are the things you probably disposed of (who thought the '70s were anything?) and now you will regret it.

WSJ: When the Outrageous Became Mainstream