Their beaks have serrations on it.

它们的喙上有锯齿。

And they got these little serrations down the front and the back that tear through the muscle fibers.

牙齿前后都有这些小锯齿能够撕开肌肉纤维。

The shark tooth has serrations along the edge, literally like a steak knife.

鲨鱼的牙齿在边缘呈现锯齿状，简直就像一把牛排刀。

For example, under the microscope, we can look at the serrations on the edges of these teeth.

例如在显微镜下我们可以看到两颗牙齿边缘的锯齿形状。

I can tell from the size, I can tell from the shape of the serrations, and so on.

从它的大小形状以及锯齿的形状等就能看出来。

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 bills of some species are specialized for fighting, with spiny tips, hooks, or even saw-like serrations.

一些物种的喙专门用于战斗， 有刺尖、钩，甚至锯状锯齿。

Serrations on the leading edges of their wings dampen turbulence and a coating of velvety fibres muffles sound.

它们机翼前缘的锯齿可以抑制湍流，天鹅绒般的纤维涂层可以抑制声音。

Larson's company now makes extremely accurate plastic casts of Stan, right down to the serrations in the teeth.

拉尔森的公司现在制造极其精确的斯坦塑料模型，连牙齿上的锯齿都不放过。

What they found were tell-tale serrations meaning the culprit who chewed these bones had serrated teeth and jaws powerful enough to cut the bone.

他们发现了泄露秘密的锯齿痕迹，这表明咬到这些骨头的肇事者拥有锯齿状牙齿，而且颌部有力能够切开骨头。