0 to deal with something without the necessary care or skill -- 对…处理不当
The police were accused of mishandling the investigation. 警方被控调查不当。
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。