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如果这是一个新手问题,我提前道歉,但是这样做有什么实际优势?
每种语言的国家代码都相同,但每种语言的国家名称不同。
国家代码更短,占用更少的存储/内存。
国家代码是唯一的,它对 db-search 很有用