Another study under way at the Pew Centre on Global Climate Change, another think-tank, sizes up a $15 carbon price using data on the past effects of rising energy prices on industry.
皮尤全球气候变化中心（另一个智囊机构）正在进行另一份研究，这份研究利用能源价格上升对各行业的影响，把碳价格估计定在15美元每吨。
A World Bank Study finds between 15 percent and 43 percent of food price increases on international markets reflect the rush towards agro-fuels by certain countries.
世界银行的一份研究报告也显示，国际市场上15%到43%的粮食价格暴涨跟某些国家大力开发生物燃料有关。
The cartel requested a study on the effect of invoicing oil in an alternative currency, and an OPEC committee proposed using a basket of currencies to price the commodity.
欧佩克要求对采用另一种货币进行石油结算的影响进行研究，欧佩克一个下属委员会提出用一篮子货币对石油定价。
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