More than two hundred fifty thousand years ago Taurine cattle have no hump on their back.

VOA: special.2009.05.05

But I try to go back every two years.

但我争取每两年回一次家乡。

旧金山的景点 - SpeakingMax英语口语达人

Finally,after six years of back-breaking labor, the two work teams met in northern Utah.

VOA: special.2010.02.25

To understand that, you would have to travel back in time two-hundred-fifty-million years.

VOA: special.2010.01.04

But the history goes back more than two thousand years.

VOA: special.2009.12.21

"It's hurt the Thai economy - it's put Thailand back two to three years - tourism has been badly affected.

VOA: standard.2010.05.21