求翻译：　生产可能性边界用来表示经济社会在既定资源和技术条件下所能生产的各种商品最大数量的组合，反映了资源稀缺性与选择性的经济学特征。是什么意思？

Production possibility frontier is used to indicate the maximum number of combinations of economic and social conditions established resources and technology can produce a variety of goods, reflecting the scarcity of resources and selective economic characteristics.

Production possibilities frontier to the established economic and social conditions, resources, and technology will be able to produce the maximum number of items, the combination reflects the scarcity of resources, with a selective characteristics in economics.

　The production possible boundary uses for to express the economic society in decides each kind of commodity greatest quantity combination which the resources and under the engineering factor can produce, has reflected the resources scarcity and the selective economic characteristic.

　Production possibilities frontier used to represent economic and social condition of the established resource and technology can produce a wide variety of goods by the maximum number of combinations, reflects the economic characteristics of resource scarcity and selective.

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