Runs as a 24-hour background operation;
运行作为一个24小时的后台操作；
Starts execution of a background operation.
开始执行后台操作。
Including background operation code database, interface code to operate.
包括后台数据库操作代码，界面操作代码。
How can I change the background operation priority dynamically using Dispatch or operation queues.
如何改变我的后台操作优先使用或运行队列的动态调度。
Music: moderate volume of the background music, television normal operation.
音乐：背景音乐音量适中，电视操作正常。
Trust as "social relations" sound operation of the system to provide background support.
信任为“社会关系”系统的良性运行提供背景支持。
Trust as "social relations" sound operation of the system to provide background support.
信任为“社会关系”系统的良性运行提供背景支持。
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