Those canine teeth can reach up to 3 feet long!

这些犬齿可以达到3英尺长！

We have two canines on the top of our mouth and two on the bottom.

我们的上颚和下颚各有两个犬齿。

Canines have a sharp, pointy surface for tearing food.

犬齿有一个锋利的、尖尖的表面，用来撕裂食物。

Here are the canines, you can see they're very long and robust.

这些是犬齿，能看到它们很长很结实。

This giant tooth right here is the canine tooth of a saber-toothed cat from an animal called Smilodon.

这个巨大的牙齿是剑齿虎的犬齿，这是一有巨大牙齿的猫科动物。

I'm concerned right now about an active infection in his bottom left canine. - Yeah, that looks very suspicious.

我现在担心的是他左下犬齿的活动性感染。— 是啊，看起来很可疑。

It had four big canine teeth up front and several smaller meat slicing teeth in the back.

它的前面有四颗巨大的犬齿后面有几颗稍小切肉用的牙齿。

Males' canines are twice as long as females'.

雄性的犬齿比雌性的犬齿长两倍。

You also see the big canine teeth that they have.

还可以看到他们拥有的大犬齿。

And they would come back with canine slashes and stuff like that.

他们回来时会带着犬齿之类的东西。

They have large canines that they use to rip and tear into their prey.

它们有巨大的犬齿，可以用来撕裂猎物。

For example, the Patagonian toothfish neither sounds nor looks very appetizing.

例如，巴塔哥尼亚犬齿鱼听起来和看起来都不太诱人。

And their teeth evolved into different shapes and unique combinations, like canines and incisors.

他们的牙齿演变成不同的形状 和独特的组，如犬齿和门牙。

Our canines have actually become shorter over time.

随着时间的推移，我们的犬齿实际上变得更短了。

Human men today have 10% longer canines than women, and this difference isn't unique to our species.

当今人类男性的犬齿比女性长 10%，而且这差异并非人类所独有。

You can see the canine here as well as pointed teeth that extend to the back of the jaw.

可以在这里看到犬齿以及延伸到下巴后部的尖齿。

Technically speaking, a sabertooth is simply any animal with extremely elongated canine teeth.

从技术上讲，剑齿虎就是任何具有极长犬齿的动物。

We can see those large canines, what it would be like to be on the dinner side of a short faced bear.

看到那些很大的犬齿，试想一下被短面熊当成晚餐会是什么样吧。

If we look at it from this angle, we can see this cut where this large canine would have gone through this bone.

要是我们从这个角度看，我们能看到这个切口，这里就是巨大犬齿咬进这块骨头的地方。

That's right, those canines you carry around today aren't particularly useful.

没错，现在你随身携带的那些犬齿并不是特别有用。