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1·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。

2·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。

3·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。

4·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

5·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。

6·But if we have credit markets, then people can individually choose to be off the production possibility frontier and at a higher level of consumption than otherwise would.

但如果存在信贷市场，那么个人可以选择超越，P PF曲线的范围，达到比没有信贷市场时更高的消费水平。