By chemically extracting nickel form the ash, they produced 100 pounds of nickel per acre of land at a total cost per pound slightly above that of current mining.

通过化学方法从灰烬中提取镍，他们每英亩土地生产了100磅镍，每磅的总成本略高于目前的采矿成本。

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With a system designed based on current approaches, most of the changes are handled manually at a great operational cost.

按照当前方法设计的系统，大部分变更都以极高的运营成本人工处理。

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Under current rules, Brazil's minimum wage will rise by 7.5% in real terms next year—at huge fiscal cost, since pension payments are linked to the minimum wage.

在现在的制度下，巴西最低工资将在明年上升7.5%，因为退休金支出和最低工资是相联系的，所以这会导致巨大财政花费。

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President Obama's current proposal calls for insuring 30 million more Americans at a cost of about $1 trillion over ten years.

VOA: standard.2010.02.25

President Obama is fighting hard timing is now,". for his top domestic priority, an overhaul of the current health care system that would cost at least $1 trillion, a priority he asserts that can be achieved without adding to the federal budget deficit.

VOA: standard.2009.07.21

At their current cost, electric vehicles are not competitive without significant government subsidies.

FORBES: Chinese Company Offers To Acquire A Leading U.S. Battery Maker

High-voltage DC can carry power over long distances at lower cost than alternating current, but the transformers still cost too much to make the idea widespread.

FORBES: Magazine Article

According to Lockheed officials, VentureStar will be able to take cargo into space at a tenth of the current cost, and could be ready to fly every two or three days.

ECONOMIST: The space industry: Vying for stardom | The