But the ECB’s primary responsibility is to achieve and maintain price stability. When conventional interest-rate policy becomes impotent, its duty is to rely on other instruments.
接下来看看量化宽松不合法的说法。但欧洲央行的主要责任是实现并维持物价稳定。当常规利率政策不再有效时，它就有义务祭出其他工具。购买政府债券是欧盟条约明文允许的。