0 a chemical used in industry and medicine. In medicine, barium sulfate is swallowed by a person just before an X-ray is taken of their stomach and bowels, so that these organs can be seen clearly. --
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.