0 relating to or produced by farm animals that are allowed to move around outside and are not kept in cages -- (動物)放養的;放養禽畜産的
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。