You can't exactly replicate something that is three dimensional, like our planet, on a flat piece of paper, because paper has only two dimensions, and that means there'll always be a certain degree of distortion on a map.

你不能在一张纸上确切的复制出三维的效果，就像我们的星球一样，因为纸上只能是二维空间，这就意味着在地图上总有一定程度的失真。