移动设备形状大小各异，浏览器窗口也是一样。

Mobile devices are all shapes and sizes, just like browser Windows.

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用户可以移动窗口，调整它的大小，或者使之消失。

Users can move the window around, resize it, or dismiss it.

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它创建一个临时的轮廓(实际是GUI上的透明窗口的边框)，可以通过键盘或鼠标移动它或修改大小。

It creates a temporary outline (actually the border of a transparent window over your GUI) that can be moved and sized via keyboard or mouse.

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