It formed a huge gas ball that expanded rapidly.

VOA: special.2009.07.22

But,the world now has the means to rapidly diagnose malaria and treat it effectively.

VOA: standard.2010.03.09

"I'm confident from this side it will work very rapidly.

VOA: standard.2010.04.28

The hum of the spinning blades is the sound of China going green as it seeks to address the growing energy demands of its rapidly modernizing consumer society and fast-paced industrialization.

VOA: standard.2010.08.03

The H1N1 virus, which is commonly known as swine flu, has spread rapidly around the world since emerging in North America earlier this year, yet still much of what makes it so potent a threat remains a mystery.

VOA: standard.2009.08.25