0 a scientific examination of a person’s blood to find out if they have any diseases or lack any important substances -- examen de sangre
1 a scientific examination of blood -- análisis de sangre [ masculine ]
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.
Podemos completarlo paso a paso, por muy largo que sea el camino, y no se puede completar, por corto que sea el camino, si ni siquiera marcas tu huella.