0 a cell, especially one taken from a person or animal in a very early stage of development, that can develop into any other type of cell --
1 a type of cell that is able to divide to produce more cells, or to develop into a cell that has a particular purpose --
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.