"The biggest challenge of getting life saving vaccines to poor countries is that there's no market.

VOA: special.2010.03.29

What do you think is the biggest obstacle when people from other countries share each other's culture?

你认为来自不同国家的人们在彼此分享自己的文化时，最大的障碍是什么？

关于全球化 - SpeakingMax英语口语达人

Taylor says one of the biggest fears right now is that oil shortages will lead to increased violence and corruption in countries that supply oil.

VOA: standard.2009.10.20

He says even the biggest, richest countries cannot do it alone.

VOA: standard.2009.08.30

But no matter how the team performs, another American soccer story will be written in South Africa, where a small group of Americans will represent other countries on soccer's biggest stage.

VOA: standard.2010.06.09