Complex sentence: In size, the LJ45 and LJ45XR fit between the smaller Learjet 31 and Learjet 40 and the larger Learjet 60 in the Lear product line it has a range at Mach 0.81 with four passengers comfortably on board.
Split into simpler sentences: In size, the LJ45 and LJ45XR fit between the smaller Learjet 31 and Learjet 40 and the larger Learjet 60 in the Lear product line. It has a range at Mach 0.81 with four passengers on board.