Even though the Earth is not flat – and for that matter not exactly spherical – there are many analytic problems that can be approached by transforming Earth features to a Cartesian plane, applying tried and true algorithms, and then transforming the results back to geographic coordinates. This practice is as old as the tradition of accurate paper maps.

尽管地球不是平的，而且也不完全是球形的，但有许多分析问题可以通过将地球特征转换到直角坐标平面，应用久经考验的算法，然后再将结果转换回地理坐标来解决。这种做法与精确的纸质地图的传统一样古老。

Shapely does not support coordinate system transformations. All operations on two or more features presume that the features exist in the same Cartesian plane.

Shapely不支持坐标系统的转换。对两个或多个对象的操作都假定存在于同一个直角坐标系统内。