If there is a line passing the top of the ruler, and parallel to the equator, then the Angle between the line and the ruler is equal to the latitude here.

如果有一条线和赤道线平行，而且经过尺的顶端，这条线和尺的夹角就等于纬度。

youdao

The desert here is a ruler-edge sheet of mute brown dirt, studded with the occasional spiky yucca tree, and goes on and on and on, much in the same interminable way as a pub bore.

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