brachypinacoid

例句：

1. 1. The brachypinacoid is a small, cylindrical structure found on the underside of some crustaceans.
   短肢人科动物是一些甲壳类动物下侧的一个小圆柱形结构。
2. 2.In paleontology, brachypinacoids are often used to study the early stages of evolution.
   在古生物学中，短肢人科动物常被用来研究进化的早期阶段。
3. 3.The discovery of new species of brachypinacoids has sparked renewed interest in the study of marine biodiversity.
   新物种的发现激发了对海洋生物多样性研究的新一轮兴趣。