base winding

例句：

1. 1. The base winding of the river is visible from thebridge.
   从桥上可以看到河流的基础线路。
2. 2. Thefoundational line of the new project iscrucial for its success.
   新项目的基础性线路对于其成功至关重要。
3. 3. The base winding ofthe road is marked with a red dot on the map.
   道路的基础线路在地图上用红点标出。