The rise is being driven by miners such as Vale of Brazil and Rio Tintoand Xstrata, who want to take advantage of a generational boom in demand and pricing for raw materials.
支出上升受到巴西淡水河谷（Vale）、力拓（Rio Tinto）和斯特拉特（Xstrata）等矿业公司的推动，它们希望利用长达一代人时期的原材料需求及定价繁荣。
That number could easily double again, he says, with a combination of dynamic pricing and demand response.
他说，与动态定价和需求响应相结合，这个数字很容易再次翻番。
This is based upon pricing elasticity studies and consumer demand.
这是根据定价弹性研究和消费者的需求决定的。
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