我的前三十年都是在美国西部度过的。

My first thirty years were spent in Western America.

youdao

由财富杂志制作的图表显示以大宗收入排名，全球前三十位的公司中有一半是欧洲公司。

A table compiled by Fortune magazine shows that half the world's 30 leading companies by revenue are European (see table 3).

youdao

偶然的，通用公司将是第一个在股票市场上失去自己处于前三十强的位置，由于超过三十年的经营不利。

Incidentally, GM will now be the first Dow component to lose its place in the "Hot 30" because of bankruptcy in more than three decades.

youdao

The first is this era, of the 1820s, '30s, '40s and '50s, Antebellum America, exemplified most obviously by the anti-slavery movement, which is where we're going to get to as we leave today.

第一个时期,是十九世纪二十年代,三十年代,四十年代和五十年代,内战前的美国,废奴运动就是其典型,这是我们今天下课前要弄明白的

耶鲁公开课 - 美国内战与重建课程节选