但是，在所有食肉动物中，下犬牙位于颌的前面，只有当嘴张大时上犬牙才能暴露出来。
But in all carnivores, the lower canines are in the front of jaws, and only if the mouth is wide open are the upper canines exposed.
几天以后，在该目击地的附近，化石猎手阿勒迈耶胡·阿斯范(AlemayehuAsfaw)有又发现了一片带有第一臼齿的儿童颌骨化石。
A couple of days later near the same spot, fossil hunter Alemayehu Asfaw found a piece of a child's jaw with a first molar tooth.
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.
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.
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.
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.
严格说来，我们穿越时光之旅的下一站将停留在已有340万年的马卡（Maka）遗址，此地曾出土了南方古猿阿法种（Australopithecus afarensis）的一块颌骨以及其他一些遗骸。
Strictly speaking, our next stop on the walk through time should have been a 3.4-million-year-old site called Maka, which had yielded a jaw and some other remains of Australopithecus afarensis.
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.
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.
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.
吉姆·贝尔说：“在哈达尔发现的颌骨怎么会具有误导性呢？”
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.
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.
它被称为锤状颌跳蛛（因为它的有毒鳌肢和口腔的附属物），这是一种非常小的物种——只有0.16英寸那么长。
Known as the hammerjawed jumper (for the shape of its fangs and mouth appendages), it's a very small species—only .16 of an inch long.
他没有浪费一点时间，把颌骨交给澳大利亚古dna检测中心之后，就驱车赶往阿得雷德南部的奥尔丁格，去向84岁的海伦·布莱克伯恩请求一份她的DNA标本。
He didn't waste any time. After handing the jawbone over to the Australian Centre for Ancient DNA, he drove south of Adelaide to Aldinga, to ask 84-year-old Helen Blackburne for a sample of her DNA.
组织工程技术为口腔颌面部神经损伤修复开辟了一新的领域。
Tissue engineering technology has opened up a new field of oral and maxillofacial nerve repair.
依据现存文献，颞颌关节脱位口内复位法的最早记载见于1984年湖北省江陵县张家山出土的汉简《引书》。
The earliest records of temporomandibular dislocation reduced inside the oral cavity can be found in Yinshu (The Pulling Book) unearthed in Han Bamboo script in 1984 in Zhangjiashan, Hu-bei Province.
另一些人认为由于我们的饮食更加趋向于那些易咀嚼的食物，导致原来宽大、强劲的颌骨逐渐退化，进而使得我们的头盖骨也随之缩小了。
Others think our skulls are getting smaller because our diets include more easily chewable foods and so large, strong jaws are no longer required.
但是一项新的研究提出了这样一种可能性：虽然生物化石的颌骨和牙齿看起来似乎是按照事先设计好的方式发挥功能，但是这并不代表他们实际如此。
Yet a new study suggests that even if the jaws and teeth of fossilised creatures look as if they are built to function in a given way, it does not mean that they actually did so.
布兰金把颌骨送到阿得雷德实验室以后三周，收到了他一直期盼着的消息——奥斯丁已经提取到有用的基因物质。
Three weeks after delivering the jawbone to the Adelaide lab, Blenkin got the news he'd been hoping for - Austin had extracted usable genetic material.
脊柱姿势不正将额外的压力放到你的颌关节。
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.
这是孩子锻炼颌部及嘴部活动的一种自然方式，而这些活动是他出生后所需要的。
This is a natural way for your baby to practise the jaw and mouth movements he will need after birth.
目的：探讨CT三维重建成像在颌面部疾病的临床应用价值。
Objective To evaluate the clinical applications of ct three dimensional reconstruction on maxillofacial diseases.
孩子们牙齿和颌部的正常发育可能因睡眠的姿势而受到影响。
The normal development of the teeth and jaws may be affected by the way that a child sleeps.
伯格尔博士和他的同事们在论文中写道，这块颌骨有一些类似人类的特征，然而，这并不表示这块颌骨的主人就必须是人类。
The jawbone has some human-like features, Dr. Berger and colleagues write, yet that does not mean the owner of the jawbone was necessarily human.
结果：95%的住院医师在培训结束后都能熟练进行口腔颌面外科的基本操作，并对典型的常见疾病能够做出正确的诊断。
Results: 95% of residents after the training program showed command in the basic operation of oral and maxillofacial surgery, and could make the right diagnosis when they were facing common diseases.
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.
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.
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.
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