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。

youdao

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?

大伙儿，这可不是包裹在金箔纸里的金币巧克力，奥运会金牌是货真价实的金属制品，那为什么运动员热衷于咬金牌?。

youdao

The intrinsic value of a coin is the value of the metal it is made of.

一枚钱币的内在价值是造这枚钱币的金属的价值。

youdao

"I'm functional at this point, " said Lee, demonstrating a metal coin wrapper that can no longer turn because its bearings have seized from corrosion.

WSJ: NYC's Coney Island hopes for rebound after Sandy

This problem explains why metal money has circulated not in lumps but as coins, with a regulated amount of metal in each coin.

ECONOMIST: Free exchange

The other was what could be bought if the coin were melted down and the metal it contained used as payment.

ECONOMIST: The lessons of sound money from 1,000 years' experience