0 to succeed in entering a place, especially a building -- (場所)に入る
1 to arrive at a place at a particular time -- 着く, 到着する
My train gets in at 9.45 p.m.
2 to succeed in being chosen or elected -- 入学する, 当選する
He wanted to go to Cambridge University but he didn’t get in.
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.
道路がどれだけ長くても、一歩一歩完了することができますし、足跡をマークしなければ、道路がどんなに短くても完了することはできません。