然而，进行这些工作的软件往往都是独有的，即每一个游戏都要求运行在自己的客户端和服务器软件下。
The software that does this, however, is proprietary: each game requires its own client and server software.
然而，进行这些工作的软件往往都是独有的，即每一个游戏都要求运行在自己的客户端和服务器软件下。
The software that does this, however, is proprietary: each game requires its own client and server software.
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