Not so long ago, you knew where you were with money. A central bank like the Federal Reserve or the Bank of England issued dollar bills and pound notes. And you used them to buy and sell things.
不久之前，金钱的世界还是一清二楚的。像美联储或英格兰银行这样的央行发行美元钞票和英镑钞票，而人们用这些钞票来买卖商品。
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