He says he first heard about social media two or three years ago at a business meeting.

VOA: special.2009.09.14

Graduates of study programs at most foreign medical schools may have to complete two or three years of residency, although there are exceptions.

VOA: special.2009.06.02

He said this would not be a war of only two or three years.

VOA: special.2009.03.19

"If you haven't looked for a job in the last two or three years, it is radically different than anything you could imagine."

VOA: standard.2010.07.28

He says that in the Antarctic Peninsula, scientists estimate that climate change has caused temperatures to increase by two or three degrees Celsius over the past fifty years.

VOA: special.2009.06.03

"We don't want to come here two years later, three years later,or four year later to again talk about the extremism,terrorism, drugs,and so on and so forth,".

VOA: standard.2009.03.27