"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

But another military official said Iran would still need three to five more years to create such a weapon.

VOA: special.2010.04.17

Reinhold Messner of Italy and Peter Habeler of Austria made another historic climb three years later.

VOA: special.2010.06.30

Lithuania - one of the most nuclear-energy dependent nations along with France asked the EU to allow it to keep the plant open for another two to three years.

VOA: standard.2010.01.01