0 a musical instrument that consists of a long metal tube bent into circles, with a wide opening at one end, played by blowing down the tube and moving the fingers on valves -- 法國號,圓號
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。