Complex sentence: In three-dimensional space, there are 14 Bravais lattices, which are obtained by combining one of the seven lattice systems (or axial systems) with one of the seven lattice types (or lattice centerings).
Split into simpler sentences: In three-dimensional space, there are 14 Bravais lattices. These are obtained by combining one of the seven lattice systems (or axial systems) with one of the seven lattice types (or lattice centerings).