Distance, routing, and geocoding using free APIs (OSRM + Nominatim/OSM). Use when the user asks about distance between places, travel time, directions, how far something is, or needs to convert a place name to coordinates. No API key required. Requires python3 (3.6+).

使用免费API（OSRM + Nominatim/OSM）实现距离、路线规划和地理编码。当用户询问地点间距离、出行时间、导航路径、某地有多远，或需要将地点名称转换为坐标时使用。无需API密钥，需Python 3（3.6及以上版本）。