A new, legally binding agreement – not a change to the Lisbon Treaty (which would encounter too many hurdles), but a new agreement – will be needed for the eurozone to mobilize that power, and such an accord will take time to negotiate and ratify. But, in the meantime, governments can call upon the European Central Bank, which the eurozone member states already fully guarantee on a pro rata basis.
不过，政府有收税的权力，因此可以提供可信的担保。欧元区需要一个新的具有法律约束力的协议——并非试图改变里斯本条约，这样障碍太多——动员这一权力，而新条约的协商和批准需要时间。但是，在此期间，各国政府可以要求欧洲央行有所动作——欧洲央行正是由欧元区成员国按比例提供完全担保的。