Will our grandchildren inherit a world with a huge number of national currencies, or a very small number of multi-country currencies?
我们的子孙将要承继的是一个有着海量国家货币的世界，还是一个只有少数多国通用货币的地球？
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It not only supports several major currencies query, real-time update rate, multi-currency conversion, historical trends and many other features, simple and practical.