0 a system of organizing books and magazines, etc. in libraries, by which a book is given three numbers for each main subject and another number or numbers, after a decimal point (= a small solid circle) for its place within that subject --
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.