acentrous vertebra

例句：

1. 1.The acentrous vertebrae of the frog are unique to its species.
   青蛙的无脊椎动物椎骨是其物种特有的。
2. 2. The study of acentrous vertebrae has led to new insights into spinal cord development.
   对无脊椎动物椎骨的研究已经揭示了脊髓发育的新见解。
3. 3. The discovery of a new species of acentrous vertebrae has sparked excitement in the field of paleontology.
   发现一种新的无脊椎动物椎骨物种，在古生物学领域引起了兴奋。