求翻译：第三，实行可调整的固定汇率。《国际货币基金协定》规定，各国货币对美元的汇率，只能在法定汇率上下各1%的幅度内波动。若市场汇率超过法定汇率1%的波动幅度，各国政府有义务在外汇市场上进行干预，以维持汇率的稳定。若会员国法定汇率的变动超过10%，就必须得到国际货币基金组织的批准。1971年12月，这种即期汇率变动的幅度扩大为上下2.25%的范围，决定“平价”的标准由黄金改为特别提款权。布雷顿森林体系的这种汇率制度被称为“可调整的钉住汇率制度”。是什么意思？

Third, the implementation of a fixed exchange rate adjustable. The IMF Agreement provides that the exchange rates of national currencies against the U.S. dollar, fluctuations in the legal exchange rates up and down the range of 1% only. Market exchange rates in excess of the statutory rate fluctuati

The first 3 can be adjusted, the fixed exchange rate. Under the agreement of the International Monetary Fund, the currencies of those countries to the United States dollar exchange rate, the official rate of exchange can only be up and down the 1% of the amplitude of fluctuations. If market rates mo