纸币无限兑现: paper money can be exchanged in unlimited quantities for gold
汇票: draft; bill of exchange; money order; postal order 短语和例子定期汇票 a time draft; 电汇汇票 a telegraphic draft; 即付汇票 a sight draft; 即期汇票 a demand draft; 见期汇票 bill at sight; sight bill; 商业汇票 commercia