你得了那种可怕的病当然是很不幸。

You certainly were unlucky to get that horrible illness.

《柯林斯英汉双解大词典》

很不幸，我需要你，你也需要我。

Unfortunately, I need you and you need me.

youdao

很不幸，他错过了最后一班列车。

Unfortunately, he missed the last train.

youdao

I know you're bugged by my bad humor, but too bad. Maybe you're bugged by this, saying wait a minute, how does this thing stop? This is the kind of definition that your high school geometry teacher would have rapped your knuckles over.

我也知道你可能觉得我的冷笑话很烦，但是很不幸，可能你会觉得这个很烦,你会想等等,这个程序怎么停下来呢？,这就是你们高中几何。

麻省理工公开课 - 计算机科学及编程导论课程节选

And, sad to say, at least one of our tests produced an output that we were unhappy with.

很不幸的是，至少一个测试输出我们,是不满意的，它花费了太长时间。

麻省理工公开课 - 计算机科学及编程导论课程节选

Unfortunately, The Wall Street Journal stopped carrying this and I thought--it's an interesting story about what goes on.

很不幸 《华尔街日报》已不再登载这些,在我看来,里面有一个有趣的故事

耶鲁公开课 - 金融市场课程节选