at the margin

　　广义: 在边缘.在本文中,意思是:在世界对美元需求降低到最低边缘时

　　The fall in the dollar is important ,but mainly because as a store of value

　　the dollar stinks.

　　美元贬值有着重要意义,这主要因为作为一种保值存储美元已是臭名昭著.

　　With a few longish rallies,the greenback has been on a downward trend since

　　it came off the gold standard in 1971.

　　自从1971年它和金价标准脱钩以来,美元经历了几次大幅贬值,但一直处于价值下

　　降趋势.

　　Now it is suffering one of its sharper declines.

　　现在美元正经历着的历史上最大的的跌幅.

　　At the margin ,extra demand has come from those who think dollars--indeed

　　any money backed by nothing more than promises to keep inflation low--a

　　decidedly risky investment,mainly because America ,with the world's reserve

　　currency,has been able to create and borrow so many of them.

　　目前在世界对美元需求降低到最低边缘时,额外的需求主要来自那些看好美元的人,

　　而这些人看好美元仅仅是因为它的所属国是为世界提供外汇储备的美国,一个创造

　　出美元这一货币并敢借那么多的国家.而不是美元本身,一个纯粹靠许愿来保持低

　　通货膨胀的货币.而这种做法的本身就是投资的致命风险.