0 an eye made of a large number of parts, each with a separate lens, as found in insects -- (昆虫的)复眼(由许多带有独立晶状体的器官组成的眼器官)
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。