Of course, technological advances, like hydraulic fracturing (“fracking”) in the shale-gas industry, could increase supply and therefore lower prices. But mounting environmental challenges, and the limited availability of commodity substitutes, suggest that a reprieve on commodity prices is not near.
当然，技术进步，比如页岩气产业的液压致裂，能够增加供给，从而降低价格。但日益严峻的环境挑战和商品替代品的缺失意味着商品价格的下降在短期内很难实现。