Researchers place a big block of tar into the machine.

VOA: special.2010.04.07

Last week,while conducting his 17th immigration sweep, he brought out his "big gun," a machine gun.

VOA: standard.2010.07.20

In the early years of communist rule in China, a sewing machine was one of the so-called big items that indicated a high living standard.

VOA: standard.2009.09.28