A dynamic user interface (UI) is a componentized UI in which components display and disappear based on some dynamic behavior.

动态用户界面(UI)是组件化的用户界面，在此界面上，组件根据某一动态行为显示或消失。

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A service is an application that runs at a low level and without a display or UI.

服务是在较低级别运行的一个应用程序，没有显示，也没有UI。

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Views that display UI items capable of being selected should also be able to publish the UI selections.

用于显示可选择的UI项的视图还应该能够公布ui选择。

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With this API an app can adjust the display of its UI elements that would access the data class.

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