opisthotica

例句：

1. 1.The opisthotics of the dinosaurs are fascinating to study.
   恐龙的肢骨结构令人着迷。
2. 2.The opisthotics of the dinosaurs have been studied extensively in paleontology.
   恐龙的肢骨结构在古生物学中被广泛研究。
3. 3.The opisthotics of the dinosaurs has led to many new discoveries in paleontology.
   恐龙的肢骨结构在古生物学中导致了许多新的发现。