要记住，直到1971年，大多数通货的价值都是用黄金或者白银来衡量的。

Remember that, until 1971, the value of most currencies was expressed in terms of gold or silver.

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当美国建国后，我们从英镑货币转到了美元货币，那时美元被定义为二十分之一盎司的黄金，或者零点八盎司的白银。

When the United States was founded, we shifted from the British pound currency to the dollar, defining the dollar as approximately 1 /20 of a gold ounce, or 0.8 silver ounces.

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