There are still some active smallpox virus specimens kept in the world, and there are two sources of small--two places where smallpox is stored now.

世界上仍有地方保存着,一些具有活性的天花病毒样本,有两个地方还储存着天花病毒样本

耶鲁公开课 - 生物医学工程探索课程节选

And in the ancient world, the reason for this was that this very small rectangle--;it's about 150 miles long and 70 miles wide, about the size of Rhode Island--this very small rectangle lies on the way to anywhere worth going in the Ancient Near East.

在古代，战争的原因是,这小块矩形，长150公里，宽70公里，与罗德岛大小相当，这小块矩形处于要道,这条路通向古代近东的任何地区。

耶鲁公开课 - 旧约导论课程节选

It's a difficult problem that not everyone is smart -they vary in their ability -so we try to make a world in which it's pretty safe for the small investor who's not paying attention.

不是所有人都是聪明人,这是个难题,大家能力不同,所以我们试图营造一个环境,一个让小投资者感到安全的环境,而无需忧心忡忡

耶鲁公开课 - 金融市场课程节选