He knew it was special—for a start it was in really good condition, as if it had been just extracted from the animal's jawbone.

他知道它很特别——因为刚开始的时候它保存非常完好，好像刚从动物的颌骨上弄下来的。

And even though I had jaw alignment surgery a few years ago, I have to chew food in the front of my mouth.

尽管前做了颌骨对齐手术，但还是得用前咀嚼食物。

We're printing a skull and mandible so an almost complete skull just to give an idea of what this animal may have looked like.

们正在打印头骨和下颌骨，乎是个完整头骨了，能让们知道动物究竟长什么样。

However, those finds were limited to jaw parts and loose teeth.

然而，发现物只是部分颌骨和一零散的齿。

And if you try and do this too fast, you're going to either break the tooth, break the mandible, or break your tool.

如果你动作太快，你要么会折断齿，要么会折断下颌骨，要么会折断你的工具。

But no human beings today have jaws like this one.

但现在没有人有样的下颌骨了。

Their head and jawbones capture vibrations and transmit them directly into the ear.

它们的头部和颌骨捕捉振动并将其直接传递到耳朵中。

Researchers have, however, managed to find sets of teeth and partial jaws.

但是，研究人员设法找到了巨猿的齿和部分颌骨。

Then we'll move down to your mandible, it helps you chew food.

接下来，们来看一下帮助你咀嚼食物的下颌骨。

Those mandibles go from 0 to 200 miles per hour in point zero-zero-zero-zero-one-five seconds.

下颌骨在 0.000015 秒内从 0 加速到每小时到 200 英里。

The fossil find is a piece of jawbone, with a tooth, from a dromaeosaur.

次发现的化石是带有一颗齿的奔龙颌骨。

It's anchored well on the bone and the jaw is about this deep.

它非常结实地嵌在骨头上颌骨大概么深。

Some have strong armor, deathly stingers, or sharp mandibles.

他们的武器是大自然给予他们的。有人的装甲坚硬，致命的刺痛或尖锐的下颌骨。

According to four articles published in the journal Nature in late September, Chinese researchers found fish fossils that provide the " missing link" about the origin of the jaw, a key trait that 99.8 percent of vertebrate species have.

根据 9 月下旬发表于《自然》杂志的四篇文章，中国研究人员发现的古鱼化石填补了有颌类起源的 “缺失环节”，地球上现存 99.8% 的脊椎动物都具有颌骨（上颌与下巴）一关键特征。

In his report, for the Transactions of the Geological Society of London, he noted that the creature's teeth were not attached directly to the jawbone as in lizards but placed in sockets in the manner of crocodiles.

在为《伦敦地质学会学报》写的报告中，他注意到，那种动物的齿不像蜥蜴那样直接连着颌骨，而像鳄鱼那样长在槽里。

Our distant ancestors, species like the Australopithecus, ate lots of tough foods like nuts and raw veggies, and their big strong jaws and teeth were great for that.

南方古猿等远古祖先，以大量坚果、生蔬等坚硬食物为主，他们宽大强健的颌骨非常适合种饮食。

Causes It is caused by dental infection or tooth abscess, involving molars and premolars, as well as submandibular sialadenitis, injuries to oral mucosa, and mandibular fracture.

病因原因是齿感染或齿脓肿，累及磨和前磨，同时伴有下颌下涎腺炎、口腔黏膜损伤和下颌骨折。

It features a pair of jaws called mandibles with toothed inner edges that cut up and crush solid foods, like leaves or other insects.

它具有的特征就是样一对爪子模样的下颌骨，在其内侧有着用来碾碎、咀嚼用的齿，通常吃树叶或者是其它昆虫。

In the mouth, the bone beneath the bottom row of teeth is the mandible, and the bone above the top row of teeth is the maxilla.

在口腔中，下之下是下颌骨，上之上是上颌骨。

In 2016, researchers suspected the earlier relatives could be shorter than the hobbits after studying a jawbone and teeth collected from the new site.

2016，在研究了从新地点收集的颌骨和齿后，研究人员怀疑更早期的亲缘人类可能比“霍比特人”矮。