gold standard 金本位制History offers perhaps only one true example of a reserve-currency shift, from the British pound to the dollar. The pound was king during the era of the gold standard. But in the years after 1914, Britain switched fro…

mainstay メインマストを支える綱、頼みの綱、大黒柱、中堅、要（かなめ）mainstay item 主力商品Manufacturing has been the mainstay of Japan's economy since the 1960s and today accounts for just over 20% of current-price GDP. dominate a market …