US interest rates did not really rise in 2014, so most of these mechanisms are not yet directly at work. But speculators are thinking ahead and shifting out of commodities today in anticipation of future higher interest rates in 2015; the result has been to bring next year’s price decrease forward to today.
美国没有在2014年提高利率，因此这些机制大部分还没有直接起作用。但预计2015年会出现升息的投机者正在抢先一步了结大宗商品头寸；结果是让明年才应该出现的价格上涨提前到今天。