0 a central part of something from which other parts can develop or grow, or which forms a support -- 主幹
1 the part of a word that is left after you take off the ending -- 詞幹
2 the small part on the side of a watch that you turn to move the hands (= parts that point to the numbers), or to make the watch operate -- (手錶的)發條轉柄,撥針柄
3 the main supporting structure at the front of a ship -- (船)艏,艏柱
4 to stop something unwanted from spreading or increasing -- 阻擋;阻止;遏制
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。