0 an act of driving a car that you are considering buying, in order to see if you like it -- (买车前的)试车,试验驾驶
1 to drive a car that you are considering buying, in order to see if you like it -- (买车前)试车,试验驾驶
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
再长的路,一步步也能走完,再短的路,不迈开双脚也无法到达。