Information in a biological passport can help catch athletes who use banned drugs but find ways to avoid testing positive for them.

VOA: special.2011.04.12

The U.S. Government also issues small denomination debt to individuals to help them called savings bonds, but we aren't talking about those.

美国政府也发行小面值债券,用于面向个人,叫做长期储蓄债券,我们今天不涉及这些

耶鲁公开课 - 金融市场课程节选

"The students are on their own to find tickets, but I help them."

VOA: standard.2010.02.26