0 Instinctive behaviour or reactions are not thought about, planned, or developed by training. -- 本能的,直覺的
an instinctive reaction 本能反應
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。