There are several log files that are maintained by the system, but other services and programs may put their log files here too.
这里有几个由系统维护的日志文件，但其他服务和程序也可能会把它们的日志放在这里。
Participate with your child online Get to know the services and programs your child uses - ask them to show you how their favorite chatroom works, or the online gaming that they participate in.
去了解你孩子正在使用那些网络服务和软件，让孩子们向你展示他们最喜爱的聊天室或在线游戏。
All services and programs are free to all.
所有的服务和计划免费。
All services and programs are free to all.
所有的服务和计划免费。
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