0 one of several substances, such as sugar or starch, that provide the body with energy, or foods containing these substances such as bread, potatoes, pasta, and rice -- 碳水化合物,糖類;含碳水化合物的食物,澱粉質食物
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。