Or,it can be severe. The National Headache Foundation says more than forty five million people in the United States suffer chronic headaches.

VOA: special.2010.03.30

This limo driver told me this yesterday; he said it's going to cost him five hundred million pounds or something like that to do this.

那个司机昨天是这么跟我说的,他说他得花五亿英镑,才能买到

耶鲁公开课 - 金融市场课程节选

The number of infected men, women and children is estimated at more than five and a half million -- or eleven percent of the population.

VOA: special.2010.04.28

The goal is to help an additional five million students earn degrees or certificates.

VOA: special.2009.07.16