But, by lowering long-term interest rates, central-bank purchases of government debt can help contain government debt service. In this way, QE can keep solvent a government that otherwise would be insolvent – a nightmare scenario for a central bank.
但是通过压低长期利率，央行对政府债券的采购可以帮助维持政府债务体系的正常运行。借助这种方式，量化宽松可以让一个本该破产的政府——这对央行来说堪称一场噩梦——维持偿付能力。