I like cats but unfortunately I'm allergic to them.

我喜欢猫，但遗憾的是我对猫过敏。

《牛津词典》

We have been accused of exaggerating before, but unfortunately all our reports proved to be true.

我们曾被指责夸大其词，但遗憾的是，我们所有的报告都证明是真实的。

《柯林斯英汉双解大词典》

We can believe the molecular data, the DNA, or we can believe the skeleton trail, but unfortunately, not both.

我们可以相信分子数据和DNA，或者我们可以相信骨架线索，但不幸的是，我们不能两者都相信。

youdao

But unfortunately it was the contrary."

VOA: standard.2009.06.28

But unfortunately, this is incredibly underwhelming certainly in the first week of a course.

但不幸的是，它不能让我们,在第一周的课程里留下深刻的印象。

哈佛公开课 - 计算机科学课程节选

but unfortunately the days when I could go were never available. It didn't work out.

但可惜的是，我没时间去。没能实现这个心愿。

蒂姆伯顿最棒 - SpeakingMax英语口语达人

The same holds true for the next level, but unfortunately, the conclusion falls apart.

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Meanwhile, other proposals have been tossed on the table, but unfortunately they gain little traction.

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Elliot Clark makes a good point about standards, but unfortunately this situation has devolved into finger-pointing.

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