As an interesting aside, one may note that the present US debt of US$10.5 trillion easily exceeds the value of ALL circulating currencies in the world PLUS the value of all gold ever mined!

• 作为一首有趣的插曲，我们可能都会注意到美国现有的债务额为10.；5万亿美元，它们非常轻易就超越了全世界所有已开采的黄金价值总和。