0 When something unpleasant sets in, it begins and seems likely to continue in a serious way. -- (不好的事)到来,开始(而且可能会持续)
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。