他们在书中阐明，1980年之前，一切全球不平等现象的加剧，都是由于不同类别国家间平均收入差距拉大。

They show that all the increase in global inequality, prior to 1980, was the result of the growing differences in average incomes across country groups.

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类似地，个别国家的商店可能不销售某个特定产品类别或某个产品。

Similarly, individual country stores may not sell certain categories or products.

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但实践中，规则提案会把整个资产类别剔除，而各别国家的银行业却依赖这个类别，把它作为它们主要的资本构成。

But in practice, the proposed rules would throw out whole asset classes that individual national banking industries depend on for a major part of their capital.

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