Unfortunately we're in this collapse situation in the economy so the Fed has a problem.

不幸的是,我们正处于经济中的这种崩塌的情形中。

耶鲁公开课 - 金融市场课程节选

He fought brilliantly and bravely, and drove the enemy from the field, but in the course of the battle he himself was killed.

他作战神勇,足智多谋,赶走了敌人,但在战争中他不幸战死沙场

耶鲁公开课 - 古希腊历史简介课程节选

If the vehicle in the unfortunate circumstances of a collision, has to be able to maintain the security of the hydrogen which means more mass, which means a lot of the efficiency is being squandered What's the environmental impact of hydrogen production?

如果车辆,在碰撞中发生了不幸，要仍然能够保持氢气的安全性的话,意味着需要更多的质量，也就是说大部分效率被浪费了,制氢对环境有什么影响呢？

麻省理工公开课 - 固态化学导论课程节选

The touching of the Lady's lip touches us in other ways as well though, at least in this lecture, because we remember that unfortunate, that horrifying image of the lip that Milton had noted in the commonplace book.

碰触女士的嘴唇也在其他方面感动了我们，至少在这一讲中，因为我们记得那不幸的，充满畏惧的嘴唇的形象,那是弥尔顿在笔记中提到的。

耶鲁公开课 - 弥尔顿课程节选

unfortunately in Python you can, however, do things like this.

很不幸在Python中你却可以这么干，不过你期待结果是什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选