It is an electron beam. In the 1890s, the latter part of the 19th century a very fashionable word was "ray."

那是个电子束，在十九世纪九十年代，就是19世纪末,一个很时髦的词汇-“光线“

麻省理工公开课 - 固态化学导论课程节选

There was... a few years there, I think, in the early nineties,

我想在几年前，也就是九十年代初，

对纽约的印象 - SpeakingMax英语口语达人

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

First is that, during the '90s, I think the Chinese IT market was very, very small.

第一，在九十年代，中国的互联网市场规模很小。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

It's quite spectacular because here in the 1890s we have the apex of the Western classical orchestra, this big, beautiful, powerful instrument.

它之所以雄壮因为在十九世纪九十年代,西方古典管风琴正处于顶峰,这是一种巨大,美丽,有力量的乐器

耶鲁公开课 - 聆听音乐课程节选

It happened in the late 1990s, in the United States, that patent offices started to accept financial patents.

美国是在上世纪九十年代末期的时候，专利局才开始授予金融专利。

耶鲁公开课 - 金融市场课程节选

But what you've got at the top are the early 1790s and I think 1820 in terms of slave population in the American south.

一般,你们会认为南方的奴隶数量,达到高峰是在十八世纪九十年代,而我却认为1820年更准确

耶鲁公开课 - 美国内战与重建课程节选

And we need not, we just make sure we can't do that So, go ahead, we've got you on number The 1980's and 1990's, this deal seemed to work.

这一点我们必须明确,那么。。。说吧，该给的数据我都说了,其实，八，九十年代那会儿，那个协议还是起过作用。

斯坦福公开课 - 经济学课程节选

And where we where at the start of the 20th Century in the late 1890's is that we were at a place where there was great confidence in our understanding of the universe, and our understanding of how all matter worked.

0世纪开始讲起,在19世纪的九十年代,人们对于自己,对自然的理解,对自然所有物质,如何工作的理解十分自信。

麻省理工公开课 - 化学原理课程节选

I had an opportunity in the late 80s and early 90s, working with a small foundation in New York, to begin cultural activities in Vietnam before normalization of relations between the US and Vietnam.

我在八十年代末九十年代初曾经有幸，在纽约的一个小型基金会工作，和越南开展一些文化活动,那时美国和越南还未实现外交关系正常化。

普林斯顿公开课 - 人性课程节选

We had a bubble in the stock market in the '90s and it collapsed after 2000 and with that it brought the economy down.

我们在九十年代股票市场中有泡沫,并且它在2000年崩塌了0,这使得经济一度低迷。

耶鲁公开课 - 金融市场课程节选

Particularly the course I taught in the early nineties have 600 students there.

尤其是我在九十年代讲的物理课,有600多个学生。

麻省理工公开课 - 媒体、教育、市场课程节选

We've seen the price of oil, lately, move all over the map. It went up to $100 recently and it was just as late as late 1990s that it was under $20 and people just don't know where it's going to go.

我们都能看到现在石油的价格，一路飙升，最近达到每桶一百美元,而在上世纪九十年代末,每桶石油还不到二十美元0,人们根本无法预想石油价格,还会飙升到什么地步。

耶鲁公开课 - 金融市场课程节选

Also, the filing cabinet-- that sounds like a minor thing-- was invented in the 1890s.

还有档案橱柜-,听起来很微不足道-,是在19世纪九十年代发明的。

耶鲁公开课 - 金融市场课程节选

I wish the Fed had behaved better they didn't seem to recognize the bubbles that we had in the stock market in the '90s and the housing in the 2000s.

从某种意义上说，我希望,政府没有发现出来,九十年代的股票市场泡沫,和新世纪房地产的泡沫。

耶鲁公开课 - 金融市场课程节选