你可以任意旋转iPad，甚至上下倒置，屏幕会随即调整显示正确朝上的图片。

You can tilt the iPad any direction, even upside down, and the screen will flip to display an upright image.

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造成这一明显(与现代地理命名习惯相反的)上下倒置地命名的原因是，古埃及人认为尼罗河是“上天的恩赐”并因此使得所有事物的衡量标准都与尼罗河有关。

The reason for this apparent upside-down naming is that Egypt was considered the "Gift of the Nile" and as such everything was measured in relation to it.

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