每吨15欧元(22美元)的价格足够让电力公司从煤发电转向用气发电。
At 15 euro ($22) a tonne the price is high enough to induce power companies to switch some generation from coal to ga.
每吨矿砂的净利达20美元。
在2003年,从巴西到日本运输铁矿石的成本从每吨15美元涨至30美元。
In 2003 it cost $15 to ship a ton of iron ore costing $30 from Brazil to Japan.
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