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.
生产最优：这个经济体必须在自己的生产可能性边界上。
Optimal production: the economy must be in their production possibility boundary.
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。
Irving Fisher also drew on the curve a production possibility frontier for society, which he made downward-curved.
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。
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.
计算机工业的经济提高使生产可能性边界向外移动，使经济能够生产的汽车和计算机的数量增加。
An economic advance in the computer industry shifts the production possibilities frontier outward, increasing the number of cars and computers the economy can produce.
计算机工业的经济提高使生产可能性边界向外移动，使经济能够生产的汽车和计算机的数量增加。
An economic advance in the computer industry shifts the production possibilities frontier outward, increasing the number of cars and computers the economy can produce.
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