In the 20th century, life expectancy in wealthy nations increased by as much as 30 years.

VOA: standard.2010.04.08

And we can argue about whether or not that's work, but that has been the intention certainly in the 20th century and now 21st.

我们可以对这种现象有所争论，但这个观点,肯定是20世纪和现在21世纪的焦点。

普林斯顿公开课 - 人性课程节选

Because Albert Einstein, who I had on my wall,as a undergrad he meant so much to me, not only we both play the violin, the most brilliant mind and intelligence in the 20th century.

我还是大学生的时候，我家墙上有一副爱因斯坦的画像,他对于我来说非常重要，不仅因为我们都拉小提琴，20世纪最聪明最有智慧的人。

普林斯顿公开课 - 人性课程节选

There were three influenza pandemics in the 20th century.

VOA: standard.2009.05.14

Bohr and Einstein were considered the top two physicists in the world through the first part of the 20th century.

波尔和爱因斯塔被认为,是世界上顶尖的两个物理学家,在整个20世纪前页。

麻省理工公开课 - 固态化学导论课程节选

In this sense, he says the pattern appears to be similar to that,which occurred during the three 20th century pandemics.

VOA: standard.2009.05.14

So, this all starts, in terms of putting it in its historical context at the turn of the Century, we said we'd start right in on the 20th Century of where chemistry was.

从历史的观点来看,这些都起源于,上个世纪之交,我们说我们从。

麻省理工公开课 - 化学原理课程节选

"In terms of their development, they have remained in the 20th and even the 19th century."

VOA: standard.2010.02.03

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

But it wasn't always so. The rise of the soybean in America is a 20th-century phenomenon.

VOA: standard.2010.02.01

And why I'm hesitating is, in the early days of the 20th century, the Nobels were first given in 1901.

让我犹豫的是，在20世纪的早期，诺贝尔奖在1901年才开始颁发。

麻省理工公开课 - 固态化学导论课程节选

"Today,we've taken another step forward by - in leaving behind the legacy of the 20th century while building a more secure future for our children."

VOA: standard.2010.03.26

Both of these were in the UK in the early part of the 20th century.

这些都发生在,20世纪早期的英国。

麻省理工公开课 - 固态化学导论课程节选

After the war, the town fell into disrepair but was rebuilt by billionaire John D.Rockefeller in the early 20th century, to preserve the atmosphere and ideals of 18th century America.

VOA: standard.2010.07.03