But corruption,unfortunately, has been a big part of the Mexican political system for a very long time."

VOA: standard.2009.12.18

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

But, unfortunately, there aren't good animal models for many of the diseases that we'd like to study.

但是很遗憾的是,对于很多我们想要研究的疾病,并不能找到合适的动物模型

耶鲁公开课 - 生物医学工程探索课程节选

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

"We reacted very quickly and tried to prevent these characters from boarding on to the ship, but unfortunately by the time we reacted, some of them had already succeeded and accessed the ship and had even managed to reach the cabin crew area,"

VOA: standard.2009.09.26

But unfortunately, gas stations, as we all know, they tend to crowd into the same corners, they tend to be on the same road junctions, right?

但是很不幸的是,加油站,如我们所知,它们一般都在设在相同的地点,他们趋向设立于同一个路口,对吧

耶鲁公开课 - 博弈论课程节选

There's some space up in heaven where all the unborn babies are that will live in the future and, unfortunately, they're not able to have a town meeting; but, let's suppose they could.

想象一下在天堂的某处,所有尚未出生但即将诞生的小婴儿们在那儿，可惜的是，他们开不了人民大会吧;,不过，我们假设这能成真。

耶鲁公开课 - 金融市场课程节选

Unfortunately, this is also call the Rydberg constant, so it's a little bit confusing. But really it means h the Rydberg constant divided by h, and that's equal to 3 .

不幸的是，它也叫Rydberg常数，所以这可能会有点混淆,但它表示Rydberg常数除以。

麻省理工公开课 - 化学原理课程节选

And in chemistry, just like in any discipline, you have all types of scientists, but also all types of personalities, and unfortunately Pauli had a personality that was known for, first of all, being very arrogant, but also the very unfortunate trait of taking other people's scientific ideas as his own.

在化学里，就像在任何学科中一样，有各种各样的科学家，也就有各种各样的性格，不幸的是，Pauli的性格，是以傲慢闻名，另外一个特点就是喜欢,把别人的观点占为己有。

麻省理工公开课 - 化学原理课程节选