外汇储备的规模表明了一个显而易见的事实：这些国家拒绝实行许多外部经济学家建议的自由浮动汇率制度。

The scale of the reserve accumulation demonstrates the obvious: these countries have refused to adopt the freely floating exchange rates many outside economists recommended.

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其次，农业中还存在一种较高层次上的外部规模经济，它主要存在于农业的流通领域和农产品的加工环节。

Next, in the agriculture also has in one kind of higher exterior economies of scale, it mainly exists to the agricultural current distribution realm and the agricultural product processing link.

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第二部分，从经济学的角度，对网络银行服务进行分析，主要涉及网络银行服务的外部性，网络银行服务的规模经济，最后重点论述了网络银行服务的定价问题。

Part Two analyzes net Banks services from economic perspective, mainly involving the externalities of net Banks services, scale economy of net bank services and the pricing of net Banks services.

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