0 an economic theory developed in the 16th to 18th centuries that says that a government should control the economy and that a nation should increase its wealth by selling more than it buys from other nations -- 重商主义
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。