pachyodont

例句：

1. 1. The pachyodont tooth is a type of tooth that has many small openings in it.
   多孔牙是一种牙齿，其中有许多小开口。
2. 2.The fossilized remains of a pachyodont animal have been found in the cave.
   在洞穴中发现了一种多孔动物的化石遗骸。
3. 3. The pachyodont shellfish are commonly used as food sources.
   多孔壳类动物通常作为食物来源。