0 a small organ at the base of the brain that controls the growth and activity of the body by producing hormones -- (腦下)垂體
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。