一直以来，货币政策制定者的黄金法则都是一旦发现通货膨胀低于官方目标范围，就立刻将短期利率设定为一定水平来促进支出和投资。
The rule of thumb for monetary policymakers has long been that if inflation is below official target ranges, short-term interest rates should be set at a level that spurs spending and investment.