0 a structure on top of a submarine (= a ship that can travel underwater) or, in the past, a military ship, from which the ship can be controlled and that contains a periscope (= a device for seeing what is above you): --
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.