Accordingly, every modern currency unit originated as a unit of weight of gold or silver.
相应的，所有现代货币单位都起源于黄金或白银的重量。
2
And as a currency alternative, silver is more practical.
另外，作为货币替代品的白银更实用。
3
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.