他偶然发现了一个450万年前的有袋动物的颌骨。
He came across the jawbone of a 4.5 million-year-old marsupial.
而另一种蛇类，黄颌蛇，并不完全属于任何一个类别。
Another family of snakes, the colubrids, don't really fit neatly into either category though.
对于黄颌蛇来说，毒液一定有其他的作用，可能和消化猎物有关。
For colubrids, the venom must serve some other purpose, maybe linked to digesting prey.
它窄长的头骨、没有牙齿的尖颌和短短的颈椎表明，它与无齿翼龙类似。
Its elongated skull with toothless tips and short cervical vertebrae indicate that it is similar to that of Pteranodon.
黄颌蛇，你可能也听过这种蛇，虽然它们经常被归类为毒蛇，但实际上它们通常是无毒的。
Colubrids, and you probably heard this too, although they are often classified as venomous snakes, they are actually generally non-venomous.
将黄颌蛇与其他被我们归类为毒蛇的蛇区别开来的，并不是它们没有毒液，而是缺乏一种将毒液输送到猎物体内的有效方法。
What separates colubrids from other snakes we have been classifying as venomous, is not the lack of venom, but the lack of an effective way to deliver the venom into its prey.
在大多数毒蛇中，如蝰蛇和眼镜蛇，毒液用于捕捉猎物、使其无法行动；但在彩颌类中，只有在猎物到了蛇嘴里后，毒液才会滴到猎物身上。
In most venomous snakes, like vipers and cobras, the venom is used to catch and inmoblize the prey; but in colubrids, venom drips onto the prey only after the prey is in the snake's mouth.
接下来的六年里，乔伊在里尔与医院颌面外科医师艾玛·伍丽一起工作。
Over the next six years, Joy worked with maxillofacial surgeon Emma Woolley in Rhyl.
他吃海星、颌针鱼。
沙蚕的颌齿是由蛋白质跟锌离子结合而成。
Ragworm jaws are made of a mixture of protein and zinc ions.
脊柱姿势不正将额外的压力放到你的颌关节。
良好的饮食习惯是保持口腔颌支持它们最佳结构所必需的。
A good diet is required to keep the mouth and supporting structures in optimal shape.
颌骨，牙龈，嘴唇和软、硬颚不断的在生活中补充它们自己。
The jawbone, gums, lips, and soft and hard palates are constantly replenishing themselves throughout life.
吉姆·贝尔说：“在哈达尔发现的颌骨怎么会具有误导性呢？”
理解的面部特征和颌线是重要的，这是你的发型师的工作。
Understanding the facial features and the jaw line is important and this is the job of your hairstylist.
该疾病是一种幼犬发育性疾病，造成颌骨和头骨的结构改变。
It is a developmental disease in puppies causing extensive bony changes in the mandible and skull.
而有强壮颌骨的动物，如大猩猩和猩猩，则适应吃那些需要很多咀嚼的食物。
Animals with robust jaws, like gorillas and orang-utans, have long been known to be adapted to eating foods that require a lot of chewing.
目的：总结颞颌关节强直关节成型术后小颌畸形的临床矫治经验。
Objective To summarize the clinical experience in micrognathia correction after arthroplasty of tempromandibular joint ankylosis.
“一块羚羊颌骨内部的痕迹表明，这些原始人曾将它的舌头割了去，”怀特说。
"The marks on the inside of one antelope jaw showed they cut out the tongue," White said.
目的：评价坚固内固定术在治疗颌面骨多发性骨折的临床应用效果；
Objective:To evaluate the effect of strengthening internal fixation on compound fracture of facial bone.
对于行颌面部手术的儿童，评估磨牙后空间与口腔器官插管的关系。
An Evaluation of the Retromolar Space for Oral Tracheal Tube Placement for Maxillofacial Surgery in Children.
然而，当弄清楚在洁净水域的沙蚕，其颌齿也饱含锌的时候，该设想就行不通了。
That suggestion, however, fell apart when it became clear that the jaws of worms from clean water, too, were stuffed with zinc.
因此，当有这些（强壮）颌骨的化石出土时，人们便认为这些生物也是吃较硬的食物。
So when fossils with these jaw structures have turned up, it had been assumed that the creatures were eating tough foods too.
在它们扁圆头部的前端有一对弯曲的尖牙作为颌齿，用来俘获甲壳类生物并将其撕碎。
At the front of their bulbous blue heads they have curved fangs that act as jaws. They use these to capture and tear apart their crustacean prey.
目的探讨经皮穿刺硬化治疗肢体及颌面部低流量血管畸形的可行性和临床疗效。
Objective To study the clinical feasibility of the percutaneous sclerosis treatment for limb and maxillofacial region low flux vascular malformations.
依据该动物的颌骨计算表明，它能以15万牛顿的力度把猎物咬伤，咀嚼力度是霸王龙的四倍。
Calculations based on the animal's jaw bones suggest it could have bitten into its prey with a force of 150 kilonewtons, or four times the force thought to be exerted by the jaws of a T. rex.
结果：下颌偏位的健康有牙颌者中，在颌位矫正前后头部、肩部、腰部姿势变化者约有50%；
Results: In frontal cephalograms, 50% of subjects were found the changes of postures of head, shoulder and waist after treatment.
位于第三的是专门对口腔、下巴和头部动手术的口腔颌面外科医生，他们平均每年收入210710美元。
At number three are oral and maxillofacial surgeons, who perform surgery on the mouth, jaw and head; they make $210, 710 per year.
现代阔口蛇，像蟒蛇和水蟒，能吃大的猎物是因为它们的颌关节恰位于头骨的后面，能使蛇的嘴张得非常宽。
Modern large-mouthed snakes, such as boas and anacondas, can eat large prey because their jaw joints are positioned well behind their skulls, allowing the snakes to open their mouths very wide.
现代阔口蛇，像蟒蛇和水蟒，能吃大的猎物是因为它们的颌关节恰位于头骨的后面，能使蛇的嘴张得非常宽。
Modern large-mouthed snakes, such as boas and anacondas, can eat large prey because their jaw joints are positioned well behind their skulls, allowing the snakes to open their mouths very wide.
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