0 a change in a situation that is much bigger than usual -- 大躍進,階躍變化,步進變化(在某一局勢下,比常規大得多的變化)
There is a step change taking place in communications technology. 通訊技術取得了較大的變化。
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。