Many herbivorous mammals have teeth adapted for grinding plant material.

许多草食性哺乳动物的牙齿适合磨碎植物材料。

From the outside, we can see a wide, flat surface that is excellent for grinding plant material.

从外面看，我们可以看到一个宽阔平坦的表面，非常适合研磨植物材料。

You can feel in your own mouth the sharp tearing teeth of your canines and premolars, while your molars are relatively flat, and can be used for grinding plant material.

您可以在自己的嘴里感觉到犬齿和前臼齿锋利的撕裂牙齿，而您的臼齿相对平坦，可用于研磨植物材料。