A get-back path is planned based on the bionic principle, saving time and cutting down the distance needed to back.
本文还提出一种基于仿生原理的回程方式，使机器人在回程中节省了时间和距离。
2
Article 2 water saving shall follow the principle of unified planning, total volume control, planned water consumption, comprehensive utilization, and emphasis on benefits.
第二条节约用水遵循统一规划、总量控制、计划用水、综合利用、讲究效益的原则。
3
Thus, all devices can go to destination through the same planned routine but it need not make the same routing planning repeatedly on different devices, saving time.