Most important, it means having conditions in place that make countries more stable and prosperous than they would be if they were not members. They have to be better off inside than they would be outside.
但“完善”货币联盟意味着什么？最重要的是，它意味着创造一系列条件，使各国加入其中能获得更大的稳定与繁荣。加入其中比位于其外更好。