Complex sentence: Players are not permitted to carry the ring over the 2 blue lines; they can advance the ring over the line only by passing it to another player.they cannot pick it up themselves or they will lose possession to the other team.
Split into simpler sentences: Players are not permitted to carry the ring over the 2 blue lines; they can advance the ring over the line only by passing it to another player. They cannot pick it up themselves or they will lose possession to the other team.