They go back to ancient times, but I'm going to talk about some of our modern institutions and I'm going to talk first about discount bonds.

它能追溯到远古时代,不过今天要讲的是现代商业机构的利率,首先要讲的是贴现债券

耶鲁公开课 - 金融市场课程节选

Although I don't quite understand--I should say, there's many things about how the fighting went on which we can only attempt to imagine because we just don't have films of ancient hoplite battles, I'm sorry to say.

虽然我有时也很困惑,比如说,战场上瞬息万变,情况非常复杂,由于没有古代重步兵白刃战的影像资料,我们只能猜想战场上发生了什么,真的是很遗憾

耶鲁公开课 - 古希腊历史简介课程节选