0 a small, circular tower that is part of a castle or a large building -- torreta
1 a part of a military vehicle that contains a large gun or guns and can be moved to face any direction -- torre giratória
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.
Podemos completá-lo passo a passo, por mais longa que seja a estrada e não pode ser concluída, por mais curta que seja a estrada, se você nem mesmo marcar sua pegada.