Majungasaurus has serrated teeth. Each one of those little serrations is call a denticle.

玛君龙有锯齿状的牙齿。每一个这样小的锯齿叫做小齿。

The Megalodon's skin was covered with tiny taste buds called denticles.

巨齿鲨的皮肤覆盖有称作髓石的微小的味蕾。

The denticle marks found in the bones were spaced about 0.48 millimeters apart.

在被发现的头上的小齿痕迹之间的间隙大概是0.48毫米。

Despite its smooth external appearance, at the micro level, it has a coarse texture thanks to thousands of tiny teeth-like scales called dermal denticles.

鲨鱼的皮肤还有别的独到之处，虽然从外面看上去十分光滑但是在显微镜下有着粗糙的纹路鲨鱼皮肤表面成千上万微小的齿状麟片。

Plus the structure of denticles varies across the body in such a way as to reduce noise and drag when the shark moves through water.

这使表面异常坚固而且这些盾麟的结构因身体部位不同而各异以减少鲨鱼在水中游动时。

The ridges on the roof of a mouse's mouth, the spacing of bird feathers or the hair on your arms, even the toothlike denticle scales of sharks.

老鼠嘴巴顶部的脊，鸟类羽毛的行间距或手臂上的毛发，甚至鲨鱼的牙齿状的密度鳞片。