0 an artificial language, for example one invented for a film, TV series, or book -- (为书、电影或电视剧等创造的)虚构语言,人造语言
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。