0 to cause people to doubt someone's character, qualities, or reputation by criticizing them -- 抨击;质疑
Are you impugning my competence as a professional designer? 你是在质疑我作为专业设计师的能力吗?
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。