Alison Francis,Senior Science Journalist
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，更多细节参见同城约会
Let me introduce you to what I call the PCM boundary. PCM (Pulse-Code Modulation) is the raw, uncompressed digital audio format that eventually gets sent to your speakers. It’s the terminal endpoint of every audio pipeline, regardless of how aggressively encrypted the source was.
（五）违反规定使用或者不及时返还被侵害人财物的；