0 a weak acid made of carbon dioxide dissolved in water --
1 a weak acid made of carbon dioxide (= a gas) mixed with water --
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.