微地的知识件(Kware)车历 - 博客大巴 ... they were extremely cautious and required Apple to protect their 权时,他们极其谨慎并要求 Apple保 music from being illegally copied. The solution was to create a 护其音乐以防非法复制。方案就是建 DRM system, which envelopes each song purchased from the iTunes 一套DRM系统, 它以特殊的加密软件 ...
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