不断更新演变的货币（The changing nature of money）丨BBC听英语

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有人说金钱能推动世界运转。作为交易中不可缺少的一环，“钱”这一概念将会怎样改变？从以物易物式的古老经济制度到如今使用现金、信用卡、甚至是网络虚拟货币等支付手段，人们对金钱的定义和理解在不断地更新。本集《随身英语》展望并探讨货币本质的演变过程和前景。 课文内容 Vocabulary: Money 词汇: 货币 How do you pay for things in a shop? Perhaps you like the  tangible  reliability of  hard cash ? Maybe the financial flexibility of a credit card suits you better? Or perhaps you prefer the simple convenience of a smartphone? Whatever you use today, experts believe all these methods could soon become  outdated . Instead, we will use our bodies: our eyes, our fingerprints, even our mere presence in the store. In fact it's happening already. Amazon are trialling store ………………………………