0 a sign on a stave (= the five lines on which music is written) that shows that the notes are below middle C (= the C near the middle of a piano keyboard) -- clau de fa
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.
Podem completar-lo pas a pas per molt llarg que sigui el camí i no es pot completar per curt que sigui el camí si ni tan sols marqueu la vostra petjada.