0 one of the electrodes (= objects that electricity moves through) in a piece of electrical equipment. The anode is the negative electrode in a battery and the positive electrode in an electrolytic cell. -- 正极,阳极
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。