dentate fissure

例句：

1. 1. The fossilized teeth are evidence of ancient life in this region.
   这些化石牙齿是该地区古代生活的证明。
2. 2.The dentate fissures on the surface of the rock indicate that it has been exposed to water for a long time.
   岩石表面的齿状裂隙表明它已经暴露在水中很长时间了。
3. 3. The dentate fissures in the stone are perfect for hiding small treasures.
   石头中的齿状裂隙非常适合藏匿小宝物。