新的弹性同样放松了社会的边界。

That new unfixed social boundaries as well.

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他主张将边界作为社会变革的推动者。

He argued for the frontier as an agent of social change.

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欧文·费雪还画了一条曲线，一条社会的生产可能性边界，他让它向下弯曲。

Irving Fisher also drew on the curve, a production possibility frontier for society, which he made downward-curved.

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Irving Fisher also drew on the curve a production possibility frontier for society, which he made downward-curved.

欧文·费雪还画了一条曲线,代表了社会的生产可能性边界PPF,这是一条向下的曲线

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