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A Medium of Exchange.
交易媒介。
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Money serves as the medium of exchange.
货币是商品交换的媒介。
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Medium of Exchange.
交易媒介。
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As a generally accepted medium of exchange.
作为一个被广泛接受的交换媒介。
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Money as the actual medium of exchange is completely liquid
货币作为实际的交换媒介完全是可变的