The sacrum is, in turn, also fused or attached to the ilium depending which animal you're looking at and this whole structure, of course, is designed to support the great weight of the Tyrannosaur.
反过来,骶骨也融合或附着在髂骨上,具体取决于您正在观察的是哪种动
,而整个结构当然是为了支撑霸王龙的巨大重量而设计的。