0 a card worth a particular amount of money that is given as a present and can only be used to buy a book: --
1 a document worth a particular amount of money that can only be used to buy books: --
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.