I've been here in MIT for thirty years, and in the early nineties I taught the large freshmen physics course, and electromagnetism.

我麻省理工工作三十年了，在上世纪九十年代初,我就开始给大一新生上物理课，以及电磁学。

麻省理工公开课 - 媒体、教育、市场课程节选

When you first bought the house they told you what the mortgage payment was and they're fixing that forever, well for thirty years.

最初你买这套房子的时候,他们已经告诉你每月偿还额是多少,在未来30年里这是固定的

耶鲁公开课 - 金融市场课程节选

This is how I end the previous course, but it's the most appropriate place to start this one, because the Paris Commune hung over Europe for the next twenty or thirty years.

我上节课结束时就讲到这里,这十分适合作为这节课的开头,因为巴黎公社的阴霾,笼罩了欧洲接下来的二三十年

耶鲁公开课 - 1871年后的法国课程节选

In the debates ranging for the last thirty years or so over the value of traditional pedagogy and over the value of canonical reading lists, Milton is always cited, invariably cited, as the canon's most stalwart representative of oppressive religious and social values.

过去30多年来，在传统教育学和权威必读书目,对价值的争辩中，米尔顿总是，无一例外的，被看做是英国文学经典中,宣扬压迫性的宗教社会价值的最坚定代表。

耶鲁公开课 - 弥尔顿课程节选

Adjustable rate mortgages have a long term -they might last for thirty years -but the interest rate is not fixed for the whole thirty years.

可调利率抵押贷款的期限很长,也许会长达30年,但是利率在30年间并不是固定的

耶鲁公开课 - 金融市场课程节选

But if most people who are good borrowers, who know what they're doing, want these, they want a conventional thirty-year mortgage because it will fix a mortgage payment for the rest of the thirty years and you have nothing to worry about.

但是如果大多数人是优质借款人,他们知道自己在做什么,他们会选择普通30年期抵押贷款,因为在剩余的30年时间里,抵押贷款的偿付是固定的,你不需要为它担心

耶鲁公开课 - 金融市场课程节选