0 in football, and some other sports, a small, yellow card that is shown to a player by the referee (= the official who is responsible for making certain the rules are followed) as a warning that the player has not obeyed a rule --
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.
We kunnen het stap voor stap voltooien, hoe lang de weg ook is en het kan niet worden voltooid, hoe kort de weg ook is, als je niet eens je voetafdruk markeert.