0 the method of growing plants in water to which special chemicals are added, rather than growing them in earth -- (植物的)無土種植法,水耕法
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。