Specialized lungs and air sacs allowed them to take in more oxygen and also made their skeletons lighter, hollowing out bone into a sturdy, honeycomb structure.

专门的肺和气囊可以吸收更多的氧气，也使它们的骨骼更轻，中空的骨骼变成坚固的蜂巢状结构。

The artificial vertebra has a honeycomb structure, which allows the new bone tissue to grow into it, and surgical screws are not needed to attach it.

人工脊椎的蜂窝状结构允许新骨组织生长, 而且不需要手术螺钉。