主体虚拟化，即卖方在网上交易中仅以网址存在，真实名称、地址在网上并不明示显现；
Main virtualization, the seller in online transactions only at the existence of true name and address on the Internet does not explicitly appear;
虚拟实践作为一种新的实践形式，是指主体使用数字化中介手段在虚拟空间进行的实践。
As a new practical form, virtual practice means subject practices in the cyberspace with the media of digital.
主体的裂变是指现实社会主体在以计算机网络为基础的虚拟社会中通过符号化的方式实现的存在。
Principal Fission is defined as the reality of society based on computing network, which exists while the virtual society is, symbolized.
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