For example, you may have AB blood in the ABO blood group system, be Rh positive in the Rh system, as well as being K positive in the Kell system, and so on.

例如，你可能是ABO血型系统中的AB血型，或是Rh血型系统中的Rh阳性，也可能是Kell血型系统中的K阳性，等等。