Why was an Object Oriented Principle required on this issue?
为什么一个面向对象原则需要这么说呢？
Why? Because the music world is fan-oriented; in fact the word customer is rarely used.
何解？因为音乐是“粉丝导向型”世界，事实上“客户”一词在音乐界很少见。
Why? Because the music world is fan-oriented; in fact the word customer is rarely used.
何解？因为音乐是“粉丝导向型”世界，事实上“客户”一词在音乐界很少见。
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