The CDC can buy this from the manufacturer for a lower price, and when you hear about government organizations distributing vaccines to different parts of the world, they're buying at a reduced rate but it's still not inexpensive.

疾控中心可以从工厂拿到较低价格的疫苗,当你听到,政府组织向世界各地,分发派送疫苗时,他们确实给的是折扣价,但却并不那么廉价

耶鲁公开课 - 生物医学工程探索课程节选

What they did instead of just-remember the Federal Funds Rate is a target interest rate that the Fed attempts to hit through buying and selling treasury bills in the U.S. or in other countries buying and selling government bonds to affect the market.

他们真正做的事-记住,联邦资金利率是,美联储试图通过在美国,买进和卖出国库券,或在其他国家买进和卖出政府债券,来影响市场的目标利率。

耶鲁公开课 - 金融市场课程节选