Park automobile on the flat and levelroad, and then start engine to preheat engine oil.
将车辆停放在平坦和水平路面上，然后起动发动机以预热机油。
2
In order to resolve the question, the thesis put forward the optimal path algorithm in distributed multi-levelroad network.
针对这一问题，本文提出了大区域分布式多级道路网的最优路径算法。
3
Let the VIPs hold your arm or forearm and the VIPs can learn from your body movement whether you are walking on a levelroad, walking upstairs or downstairs.