Facebook's private messaging system is only one way they foster communication among members.
Facebook 's私人消息系统是唯一一种促进用户沟通的方式。
As it turns out, many looters there were found to have mobilized not on Twitter or Facebook but through a private messaging system for BlackBerry devices.
事实证明，发现许多抢劫者不是在微博或脸谱网上动员的，而是通过黑莓软件的私人通信系统。
Mere browsing is free, although visitors must pay for access to an instant-messaging system, price lists and dealers' private rooms.
尽管参观者必须为实时通信系统、价目单和交易商包间付费，只不过浏览是免费的。
Mere browsing is free, although visitors must pay for access to an instant-messaging system, price lists and dealers' private rooms.
尽管参观者必须为实时通信系统、价目单和交易商包间付费，只不过浏览是免费的。
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