0 a bird that is a type of grouse, found in mountains and in northern regions. Its feathers typically turn white in winter. -- 松鸡
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。