权威例句
Uncle SamUNCLE SAMUncle SamUncle Sam, the monopoly manUncle Sam’s Growing Investment PortfolioForeign students: Uncle Sam wants youSBIR: Venture Capital from Uncle SamHandicapped children: Baby Doe and Uncle SamUncle Sam at the Gas Pump: Causes and Consequences of Regulating Gasoline DistributionEconomic Regulation vs. Competition: Uncle Sam the Monopoly Man