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，一条社会的生产可能性边界，他让它向下弯曲。

Economic growth is an outward shift of a country's production possibility frontier.

经济增长是一个国家生产临界线向外的延伸。

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P PF，这是一条向下的曲线。

If there were no credit markets, everyone would have to be on the production possibility frontier; there would be no other choice.

如果没有信贷市场,每个人的收入水平都会落在PPF曲线上,别无选择

In some cases it may be possible to have more of everything by making different choices; for instance, when an economy is within its production possibility frontier.

在很多情况下，通过不同的选择会获取更多的利益。例如，经济在生产可能性边界内。