0 to allow someone or something to leave a place, especially by opening a closed or locked door -- 允许…离开,放开,放走
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。