In any case , any retail payment instrument , to the extent that it displaces to a significant degree the bank notes as a medium for transaction , erodes the seignorage , or the profits that we earn for the people of hong kong on the reserves backing the issue of bank notes 無論如何,若任何零售支付工具在很大程度上取代鈔票作為交易媒介,都會令貨幣發(fā)行收益減少,亦即是我們?yōu)楦廴司椭С职l(fā)鈔的儲備所賺取的利潤會下降。