Well, up until probably ten years ago, this was the primary propellant in just about every kind of spray thing that we had, hairspray, everything.
好吧,直到大概十年前,作为主要推进剂,存在于我们的每一个喷射器里,发胶,以及一切。
I think that many years ago, in the early 90s or 80s, or the 70s even, it was a very dangerous city.
我想很多年以前的八九十年代或者甚至七十年代,它是一个非常危险的城市。
OK, well.I'll try to explain this, This is a picture that was taken about 50 years ago.
好吧,我试着来解释一下,这张图片大概是50年前拍的。
And there was, several years ago, a very serious criminal case that rested on a sentence.
多年前的一桩刑事重案,就是依据一句话来定案
Smallpox affected world history hundreds of years ago, and it was a disease that was common in Europe, but not common in the Americas until the Americas were colonized.
天花影响了几个世纪前的历史,这种病在欧洲很常见,但在美国不多见,直到美国成为殖民地
It was not even like that three years ago, which I think is a really bad mistake.
三年前还不是这样,这次我觉得真的错得很离谱。
Now, mind you, it was 20 years ago that this program was operational, 20 years.
现在,提醒你们,这是20年前,运行的一个程序,20年了。
I'm just going to go a little bit further on -Rupert Murdoch bought The Times of London in 1981 that was twenty-seven years ago.
我会讲得深入一点,鲁珀特·默多克在27年前的1981年,收购了伦敦的《泰晤士报》
But that was, I don't know, 15 years ago, and that was fun.
但是那是,我不记得了,十五年前了,那很有趣。
a sport that was started, couple of hundred years ago now, I believe,
我相信那项运动有几百年历史了,
So I guess it was, whatever that is, 25 years ago.
所以算起来,他在这上学是25年前的事儿了。
For example, one of the statistics when I talk to people about the youth online with the study that was done years ago, where they said 1/4 teenager girls had received unwelcome sexual advances on the Internet.
例如,我通过与人们交谈获得一个数据,是关于年轻人上网的一项研究,这一研究是很多年前进行的,研究显示他们称有1/4的十几岁的女孩子,在网络上受到不受欢迎的性挑逗。
One that was developed a number of years ago but has been perfected and refined in recent years with very, very good research.
该概念很多年前就已经提出了,但在近年通过高水平的研究才被改进完善
And that was like a few years ago.
那是几年前的事情了。
But that was over twenty years ago.
但那是二十多年前的事情了。
One man in Australia a couple of years ago was under the delusion that his father was replaced with a robot and cut off his head.
几年前一名澳大利亚人由于幻想他的父亲,变成了机器人而将他父亲的头砍了下来
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