允许运用应用程序在后台运行时你还可以执行多重任务。 你可以完全定制设备的外观和触觉，从电池指示器到图标显示。
You can also enable multitasking by allowing applications to run in the background and you can completely customize the look-and-feel of the device from battery indicators to icons.
多重程序可能更容易编制、更新和执行。
Multiple procedures may be easier to develop, update and implement.
多重执行绪可以同时存取应用程序状态变数。
Application state variables can be accessed by multiple threads at the same time.
多重执行绪可以同时存取应用程序状态变数。
Application state variables can be accessed by multiple threads at the same time.
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