没有仔细的监督，系统中的虚拟现金就会积累并引发通货膨胀。

Without careful oversight, cash can accumulate in the system, causing inflation.

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它实际上是将虚拟物品从一个玩家转移给另一个玩家，是一种同时发生的通货交换。

This is actually the moving of an item from one gamer to another and a simultaneous exchange of scrip.

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