也许最好的例子就是照片浏览了：你可以简单地在屏幕上划动手指切换图片，并且双击来缩放，和使用iPhone一样。

Perhaps the best example of this is photo viewing: you flip between pictures by simply flicking your finger across the screen, and you double-tap to zoom in and out, just as you would on an iPhone.

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此外，GUI必须要能让读者执行基本的操作，如缩放和平移，并且能使执行一些任务变得简单。

In addition, the GUI must allow the user to perform basic operations like zooming and panning and makes it easy to perform the specialized tasks you have in mind.

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Processing隐藏了矩阵运算的复杂性，而提供了一些简单的函数集，它们可以实现有用的图形操作，如缩放和旋转。

Processing hides the complexity of the matrix operations and instead presents a simple set of functions with useful graphical operations such as scaling and rotation.

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