And we have a form of that here in Australia when we had the holey dollar...... when we had a coin with a hole in the middle because there was a shortage of metal.
澳大利亚就曾有过一种这类的货币，一种中间有个洞的货币。这是由于当时缺乏铸币金属的缘故。
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It's not a chocolate coin wrapped in gold foil, people. That's actual metal that composes that Olympic medal, so why do athletes bite them?