To read a map, take note of the compass direction, the legend, and the reference lines.
为了读懂地图,要注意指南针方向、图例以及基准线。
The deviation from vertical, irrespective of compass direction, expressed in degrees.
偏离垂直方向的角度,与指南针方向无关,以度数来表示。
The deviation from vertical, irrespective of compass direction, expressed in degrees.
偏离垂直方向的角度,与指南针方向无关,以度数来表示。
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