Tooth by Tooth

TOOTH by TOOTH COMPARING FANGS, TUSKS, AND CHOMPERS SARA LEVINE ILLUSTRATIONS BY T.S SPOOKYTOOTH

一颗一颗的比较尖牙、长牙和牙齿的插图

OPEN WIDE! Look at all those chompers in there. Did you know your teeth are unusual? It's true! That's because you're a mammal. Lots of animals have teeth, but mammal teeth come in different shapes and sizes. Mammals have three kinds of teeth. Take a look in a mirror and see if you can find them in your own mouth.

打开宽!看看这些牙齿。 你知道你的牙齿很特别吗？ 这是真的!那是因为你是哺乳动物。 许多动物都有牙齿，但哺乳动物的牙齿形状和大小各不相同。 哺乳动物有三种牙齿。 照照镜子，看看你是否能在自己的嘴里找到它们。

Do you see the flat teeth in front? Those are your incisors. If you haven't lost any recently, you should have four on top and four on the bottom. How many do you have?

你看到前面扁平的牙齿了吗？ 那是你的门牙。如果你最近没有瘦过，你应该有四个在上面，四个在下面。 你有多少？

Next to your incisors are sharp, pointy teeth. They're called canine teeth, and you have four of them in there, unless the tooth fairy visited not too long ago.

门牙旁边是尖尖的牙齿。 它们被称为犬齿，你的牙齿里有四颗，除非牙仙不久前来过。

Now open up really, really wide. Way in back are your molars. You may have a lot to count in there. Depending on their age, people have anywhere from zero to twenty molars. If you are over three years old, you'll probably have at least eight. BROCCOLI INCISOR MOLAR CANINE

现在把嘴张开非常非常大。 在后面的是你的臼齿。 你可能有很多东西要数。 根据年龄的不同，人们的臼齿从0到20不等。 如果你超过三岁，你可能至少有八个。 西兰花门齿臼齿犬齿

Other mammals also have incisors, canines, and molars. You can tell a lot about what a mammal eats if you look at which type of teeth are the largest in its mouth. Imagine that your incisors were longer than your other teeth. What kind of animal would you be if they were long enough to stick out of your mouth, even when it was closed?

其他哺乳动物也有门齿、犬齿和臼齿。 如果你看一下哺乳动物嘴里最大的牙齿，你就能知道它吃什么。 想象一下你的门牙比其他牙齿长。 如果它们长到可以从你的嘴里伸出来，即使嘴巴是闭着的，你会是什么动物？