He has a repetition of a previous talk.
他有前次会谈

。
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-国际 The problem relates to the way data is stored on large websites: While your personal computer only keeps one copy of a file, large-scale services like Facebook rely on what are called " content delivery networks " to manage data and distribution.
你的个

里只保留了文件的一个
,像脸谱网这样的大型服务器会通过内容分发网络来对数据进行管理和分配。