0 limited to only one person or group of people -- 專用的,專有的;獨有的,獨佔的
1 not including something -- 不包括;排除…在外
2 a story that is published in one magazine, website, etc., and no others -- 獨家新聞;獨家報道;獨家專訪
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。