For example, under the Plaza Accord, the US joined with Japan, Germany, and other G-7 countries in 1985 to intervene cooperatively to weaken the dollar. Indeed, a majority of countries pursue either fixed exchange rates, exchange-rate targets, or managed floating, all of which by definition entail buying and selling foreign exchange to moderate or eliminate exchange-rate fluctuations.
此外，干预外汇市场常常有合理理由。比如，根据广场协议，1985年美国和日本、德国和其他G-7国家联手干预市场让美元贬值。事实上，大部分国家要么追求固定汇率，要么追求汇率目标，要么采取管理浮动，顾名思义，这些做法都包含买卖外汇以缓和或消除汇率波动。