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

我现在担心是他左下犬活动性感染。— 是啊，看起很可疑。

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

从技术上讲，就是任何具有极长犬动物。

Canines have a sharp, pointy surface for tearing food.

犬有一个锋利、尖尖表面，撕裂食物。

And in Euchambersia, the tooth sockets of its canines are also connected to this canal.

而在欧氏菌属中，其犬牙槽也与这条运河相连。

I mean, we've got these sharp canine teeth that look just perfect for digging into flesh.

我们有这些锋利犬，看起是非常适合撕扯肉类。

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

他们回时会带着犬之类东西。

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

这个巨大牙是犬，这是一种有巨大牙猫科动物。

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

它们有巨大犬，可撕裂猎物。

Both canines and incisors, grow up to 50cm long in an adult male.

成年雄性犬和门牙均可长至 50 厘米长。

Our canines have actually become shorter over time.

随着时间推移，我们犬实际上变得更短了。

You also see the big canine teeth that they have.

您还可看到他们拥有大犬。

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

它前面有四颗巨大犬后面有几颗稍小切肉牙。

Males' canines are twice as long as females'.

雄性犬比雌性犬长两倍。

Just look at the canines on the first human, Ardipithecus ramidus, or Australopithecus anamensis versus modern humans.

只要看一下第一个人类，即始祖阿尔迪猿人，或湖畔南方古猿人犬与现代人类对比就知道了。

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

没错，现在你随身携带那些犬并不是特别有。

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

看到那些很大犬，试想一下被短面熊当成晚餐会是什么样吧。

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

当今人类男性犬比女性长 10%，而且这种差异并非人类所独有。

One way successful cynodonts, like Thrinaxodon, might have done this is through burrowing.

成功犬兽类，如 Thrinaxodon，可能通过挖洞做到这一点。

Meanwhile, the descendants of those little cynodonts persisted through the entire Mesozoic Era, hiding in the dinosaur's shadows.

与此同时，那些小犬兽类后代， 在整个中生代一直存在，躲在恐龙阴影下。

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，这里就是巨大犬咬进这块骨头地方。