That raises a question about the desirability of our present monetary system. 这就提出一个问题，关于现行货币体系的合意性。
Mundell believes gold could be used as a reserve asset in a reformed international monetary system for the 21st century. 他认为，在本世纪改革后的国际货币体系中，黄金可以作为一种储备资产存在。
