0 a single thing, individual etc within a group -- jednotka
1 an amount or quantity that is used as a standard in a system of measuring or coinage -- jednotka
2 the smallest whole number, 1, or any number between 1 and 9 -- jednička
In the number 23, 2 is a ten, and 3 is a unit.
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.
Můžeme to dokončit krok za krokem, ať je cesta jakkoli dlouhá, a nelze ji dokončit, ať je cesta jakkoli krátká, pokud si ani neoznačíte svou stopu.