0 a road or path that goes under something such as a busy road, allowing vehicles or people to go from one side to the other --
1 a passage that goes under something such as a busy road, allowing people or vehicles to go from one side to the other --
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.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.