All historical rates are stored by period and actuality, which means that you can go back to an old period and locate the exact values that were used during the currency conversion.

所有历史汇率都按期间和现状存储，这意味着您可以追溯到一个较早的期间并定位货币转换过程中使用的确切值。

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All historical rates are stored by period and actuality, which means that you can go back to an old period and locate the exact values that were used during the currency conversion.

所有历史汇率都按期间和现状存储，这意味着您可以追溯到一个较早的期间并定位货币转换过程中使用的确切值。

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