In the 1970s, two psychologists conducted an experiment to understand why people help or don't.

20世纪70年代，两位心理学家进行了一项实验，研究人们为什么会提供帮助或者为什么不提供帮助。

The Beatles had many smash hits in the 1960s.

甲壳虫乐队在20世纪60年代有很多轰动的演出。

It dropped precipitously in the '90s and through the 2000s.

从90年代到世纪初，犯罪率大幅下降。

The mommy wars of the 1990s are still going on today, prompting arguments about why women still can't have it all and books like Sheryl Sandberg's Lean In, whose title has become a buzzword in its own right.

二十世纪九十年代的“妈妈间的论战”直到今天仍在继续，该论战引发了人们对《妇女为什么不能工作与家庭两不误呢？》和诸如谢丽尔·桑德伯格的《向前一步》等的热议，而“向前一步”这个身就已成为一个流行词语。

It was the best of times. It was the worst of times.

那好的年代，也的年代。

Perhaps the granddaddy of all bubbles was Dutch tulip mania in the 1630s.

也许所有经济泡沫的鼻祖17世纪30年代的荷兰郁金香热。

That air of respectability was carefully concocted by her mother. My grandmother, LaRue, had come of age in the 1950s, in the decade of idealistic fever that burned after World War II.

这种表面的体面她母亲精心炮制的结果。我的外婆拉鲁成年于二十世纪五十年代，当时正值二战后理想主义成为狂热思潮的十年。

During the 1840s, blight raced through Ireland's potato crop, lleading to a famine that killed at least 1 million people.

19世纪40年代时，枯萎病迅速蔓延爱尔兰的马铃薯作物，因而引发一场粮荒，至少有一百万人饿死。

And this strange looking jet from the 1950s is still one of the best at getting that intel and finding ISIS fighters.

这架看起来很奇怪的喷气式飞机产自上世纪五十年代，至今仍先进的收集情报，找到ISIS士兵的设备。

This seven-minute orchestral piece was of course heard by millions of people worldwide, and we'll hear it alongside works written by British composers Edward Elgar and, more recently, Thomas Ades.

这曲七分钟的管弦乐作品被全世界亿万人听到，除此之外，我们还会听到英国作家Edward Elgar ，以及年代更近的Thomas Ades两位作曲家的作品。

And similarly, novel technologies that were unthinkable in my generation are native to yours.

同样，在我的年代完全无法想象的技术，对你们来说与生俱来的。

In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association (NBA) listed at over seven feet.

在 20世纪 60年代早期，Wilt Chamberlain 美国国家篮球协会中仅有的身高超过7英尺的三个人之一。

So they went from being very discontented with each other but at the end of the Cold War and then quibbling over nuclear issues and - - and India Pakistan and Kashmir into - - into the late nineties.

双方从一开始对彼此的非常不满，到冷战结束之初，然后就核问题和克什米尔问题进行争论，后进入90年代后期。

An aeronautics enthusiast who lives in a forest near Portland, Oregon, has taken a Greek passenger plane from the 1960s and made a home out of it.

一位居住在俄勒冈州波特兰市附近森林里的航天爱好者，从20世纪60年代起就驾驶一架希腊客机，并以此为家。

By the 1990s, he had forced many of his opponents into retirement, which paved the way for even bolder reforms, such as large-scale privatization of state-owned enterprises.

直到20世纪90年代，他已经迫使很多反对者退休离职，这为更大胆的改革铺平了道路，比如说，国有企业大规模的私有化。

In the 1970s and 80s, LaI was studying soils in Africa so devoid of organic matter that the ground had become extremely hard, like cement.

二十世纪七八十年代时，Lal正在非洲研究土壤，那里的土壤有机物质十分匮乏，以至于地面变得极其坚硬，就像水泥一样。

He was a hybrid, one part geek and one part hippy. It was the 60s.

他个混合体，一半技术宅，一半嬉皮士，这就60年代的潮流。

Jiuzhaigou was virtually unknown until the 1970s.

事实上，直到1970年代，九寨沟才为人所知。

Jack Foley's legacy in sound began in the 1920s, as talkies swept Hollywood.

Jack Foley 的传说始于 1920 年代，随着有声电影一起席卷好莱坞。

The company became Nissan in the 1930s.

20世纪30年代，公司更为尼桑。