His father was a freed slave who worked on the railroad.

VOA: special.2010.01.24

So, if you're looking back, say, from the end of the nineteenth century, it's not easy to see, but you can see these-- don't ever think that history runs on railroad tracks, and all you need is the timetable to show when modernization shows up.

所以,当你回顾历史,从十九世纪的末尾开始,虽然不太容易,但还是可以看出...,别以为历史是在固定轨道上行进的,别以为你只用拿时刻表,就知道新时代什么时候来临

耶鲁公开课 - 欧洲文明课程节选

His train is unsafe. Yet he stays on the job after other workers have called a strike against the railroad company.

VOA: special.2010.09.06

On Tuesday his Berkshire Hathaway company agreed to buy the nation's second-largest railroad, the Burlington Northern Santa Fe.

VOA: special.2009.11.06

The company asked him to lead workers on a project to extend the railroad into the Allegheny Mountains.

VOA: special.2009.02.21

Some cattlemen believed it might be possible to walk cattle to the railroad, letting them feed on the open grassland along the way.

VOA: special.2010.03.18

They made their lines along a partly-built railroad on the side of the hill.

VOA: special.2009.09.24

Harriet went from house to house that way on the Underground Railroad.

VOA: special.2011.02.13

She helped hundreds of people escape from slavery on the Underground Railroad.

VOA: special.2011.02.13