But economic history is littered with examples of fixed exchange rates that came unfixed; the disuniting of currency unions, though rarer, happens from time to time.
但随着固定汇率不再固定的例子频频出现，经济历史也因此蒙黑，货币联盟不团结的现象尽管鲜见，但有时还是会发生。
But economic history is littered with examples of fixed exchange rates that came unfixed; the disuniting of currency unions, though rarer, happens from time to time.
但随着固定汇率不再固定的例子频频出现，经济历史也因此蒙黑，货币联盟不团结的现象尽管鲜见，但有时还是会发生。
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