0 a liquid made from alcohol and other chemicals, used to remove dirty marks and as a fuel in small heaters and lights -- 变性酒精
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。