The map transforms a two-letter country code to the long version using a lookup table named CountryLookup.

映射通过查找一张名为CountryLookup 的表，将两个字母的国家代码转换成较长的版本。

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All lines of code are present in the long version, but all redundant lines have been removed.

这些行也存在于长版本中，但是所有的冗余行都被删除了。

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All lines of code are present in the long version, but all redundant lines have been removed.

这些行也存在于长版本中，但是所有的冗余行都被删除了。

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