For example, if your singleton Frame is meant as a global user interface for your application and two are created, your application will have two Frames on the screen — quite confusing for the user.

举例来讲，如果作为应用程序的全局用户界面的单实例框架被创建了两个，应用程序就会在屏幕上显示两个框架——这会使用户感到非常纠结。

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A screen reader provides a continuous auditory representation of what's on the screen, what options are available, what user interface control has focus, and what changes are taking place.

屏幕阅读器提供关联的听觉表述，如屏幕上有什么，可用的选项是什么，聚焦到什么用户界面控件上，以及发生了什么变化。

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For example, the detailed design of a screen in the user interface is not normally considered to be architecturally significant and is best left to a user interface designer.

例如，用户界面屏幕的详细设计通常认为对架构没有任何意义，最好是留给用户界面设计者来完成。

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The iPhone's strength lies in the overall experience, including its user interface and applications, and the screen's size wouldn't be its defining feature, he said.

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Its speed makes the touch screen user interface incredibly responsive and intuitive and, more importantly, means that the 3D and memory-intensive graphic and video performance is unsurpassed.

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Simply put, the model is the data (and by extension the HTML content of a website or app), the view is what you see on the screen (defined by the CSS styles of the user interface) and the controller is the logic that ties the two together (often expressed as the JavaScript or other interactive programming).

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