0 a deep crack near or at the top of a glacier, separating moving ice from ice that is not moving -- 冰川裂缝(冰川顶部的深度裂缝,将移动的冰与静止的冰分开)
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。