我很遗憾没有见到他们。

I was sorry not to have seen them.

《牛津词典》

我很遗憾你对我说谎了。

I'm sorry you tell me a lie.

youdao

我很遗憾地说，猫咪和 Quangle-Wangle 蹑手蹑脚地爬过去，咬掉了这六十五只鹦鹉的所有尾羽。

I am sorry to say that the Pussy-cat and the Quangle-Wangle crept softly and bit off the tail-feathers of all the sixty-five parrots.

youdao

Unfortunately, knowing what the clean version--knowing what the word is means to me the clean version is not very clean.

很遗憾,在知道了和谐版的歌词之后,我发现和谐版也不怎么和谐

耶鲁公开课 - 心理学导论课程节选

I don't really have the opportunities to study math and science, which, to some degree, I think is regrettable

我没什么机会继续学习数学和科学。我有时觉得有些很遗憾，

文学是灵魂的方式 - SpeakingMax英语口语达人

it's a pity that I'm going to die or die too soon, but at least I'm getting more than the average.

我死得太早是很遗憾，但至少我活得比平均寿命长。

耶鲁公开课 - 死亡课程节选