构建位置感知服务涉及多种任务，或大或小，其中一项任务(相对较小)可能要将一种系统坐标转换为另一种系统坐标。

Building a location-aware service involves many tasks, big and small, and one (relatively small) task may be to convert coordinates from one system to another.

youdao

构建位置感知服务涉及多种任务，或大或小，其中一项任务(相对较小)可能要将一种系统坐标转换为另一种系统坐标。

Building a location-aware service involves many tasks, big and small, and one (relatively small) task may be to convert coordinates from one system to another.

youdao