Moreover, as less fertile or accessible land is brought under cultivation, the marginal cost of food production rises.

而且当贫瘠或者不那么适合种植的土地被开垦出来后，食品生产的边际成本也提高了。

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Nevertheless, to the extent that conventional sources of energy production are declining, the high marginal cost of new sources of energy will slowly drive up the average cost.

无论如何，鉴于传统方式的能源产品正逐渐减少，新能源的高成本将缓慢抬高能源的平均成本。

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Subsidies also create excess burdens because they encourage people to consume goods valued less than the marginal social cost of production.

补贴也会产生超额负担，因为它们鼓励人们消费一些估价小于其生产的边际社会成本的商品。

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As gold prices rose, less efficient mines became viable and drove up the marginal cost of production.

FORBES: Gold Sets Up As The Next Great Short

Or rather, to be more accurate, the marginal cost to the consumer closer to the marginal cost of production for the producer.

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However, aside from copper, many of the base metals have already fallen near their marginal cost of production, which should provide a floor, Bhar added.

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