A single measure of elevation (one pixel) on the map is roughly the size of two football pitches placed side-by-side.
地图上单单一个标高测量图(一个像素)就大约有两个足球场并排拼起来那么大。
A single measure of elevation (one pixel) on the map is roughly the size of two football pitches placed side-by-side.
地图上单单一个标高测量图(一个像素)就大约有两个足球场并排拼起来那么大。
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