事实证明，海豚的下颚主要负责捕捉返回的声波并将它传输到内耳。
It turns out that the jaw is primarily responsible for capturing and transferring returning sound waves to the dolphin's inner ear.
它的头骨与鲸类相似，但它的下颚骨没有现代鲸鱼用来接收水下声音的、充满脂肪或油脂的扩充空间。
The skull is cetacean-like but its jawbones lack the enlarged space that is filled with fat or oil and used for receiving underwater sound in modern whales.
穆兰勉强一笑，露出下颚的牙齿，发出善意的轻笑。接着她又回到现有的话题上。
Mulan gave me a pathetic lower-teeth-revealing smile and grunted a charity chuckle. Then she got back to the topic at hand.
如果睡眠时你舌头的位置是患呼吸道阻力综合症的原因，医生可能会推荐一种牙齿装置向前推着下颚和舌头，并防止舌头阻塞喉部的通路。
If tongue position during sleep is causing your UARS, the doctor may recommend a dental device that pushes the jaw and tongue forward and prevents the tongue from blocking the opening to the throat.
猫鼬快速的反应可以帮助他躲避眼镜蛇的防御性攻击，它有力的下颚能够一下子杀死一条蛇。
The mongoose’s quick reflexes help it dodge the cobra’s defensive bite, and its powerful jaws can dispatch a snake in one blow.
猫鼬快速的反应可以帮助他躲避眼镜蛇的防御性攻击，它有力的下颚能够一下子杀死一条蛇。
The mongoose's quick reflexes help it dodge the cobra's defensive bite, and its powerful jaws can dispatch a snake in one blow.
我知道一个家族每次家庭成员们见面都小心翼翼的握手问候对方，没有亲吻，只用下颚快速的碰一下，好似用来接触对方的不是嘴唇而是耳朵。
I know clans whose members greet each other with gingerly handshakes or, in what pass for kisses, with hurried brushes of side jawbones, as if the object were to touch not the lips but the ears.
超人可能下巴比蝙蝠侠的更健壮一点，不过所有英雄都有宽阔的胸膛、强壮有力的胳臂，方形的下颚和自信的微笑。
Superman may occasionally have worked the chin a little more than Batman did, but all the heroes had the barrel chest, the strong arms, the square jaws and the confident smiles.
人类的牙齿及下颚由于烹饪的发明而变得越来越小。
Human molars and jaws responded to the invention of cooking by getting smaller.
年轻的雄鲑鱼长了一副新的锋利牙齿，好似在下颚下部有钩状突起一般，依靠这个，他们与同性进行争斗。
The cockfish grow a new set of teeth as well as a mighty kype, a hook-like extension on the lower jaw, which they use to fight off other males.
在棚屋底部，猛犸下颚骨交叉连结——这一巧妙设计在多数猛犸狩猎遗址都能看到。
The mammoth jaws used at the base were interlocked -- a clever technique found at most of the mammoth hunter sites.
埋葬虫拍击它们父母的下颚。
这说明可能在困难时期来临而不易咀嚼食物是仅有的食物来源时，这个人种所具有的强壮下颚和牙齿便可以立刻派上用场。
This suggests that perhaps its robust jaws and teeth came in handy when times were difficult and hard-to-eat foods were the only things available.
研究者们在对科莫多龙进行核磁共振成像时发现，在它的下颚处长有复杂的毒腺。
When the researchers performed an MRI of a dragon, they found in its jaws what they called the most structurally complex reptile venom gland known.
坚利的牙齿和下颚说明这只霸王龙肯定是个可怕的猎手。
With its powerful jaws and teeth, T-Rex was a terrifying predator.
这种3英尺长的鳄鱼以植物和幼虫为食，它下颚上长着一对龅牙用来挖掘食物。
This 3-foot-long croc was a plant - and grub-eater with a pair of buckteeth in the lower jaw it used to dig for food.
肌纤维的分配方式，伸缩快速的肌纤维与伸缩慢的肌纤维的比例还有肌纤维的连接方式以及他们的位置分布决定了一种生物能以多快的速度和多大的力量来和尚他们的下颚。
The distribution of the fibers, the ratio of slow fibers to fast ones and their attachment and arrangement determine the speed and force with which each species can close its jaws.
经过艺术家重塑的这张脸，可能属于一名男性也可能是女性，是以发现于一个熊冬眠洞穴里的部分头骨和下颚骨为基础建立的。
The artist's reconstruction - a face that could be male or female - is based on the partial skull and jawbone found in a cave where bears were known to hibernate.
请注意下颚骨是如何联锁而形成坚墙的。
Notice how the original jawbones interlock to form sturdy walls.
我们得到下颌的一部分，却都比我们见过的任何下颚化石都要大，“奥斯陆大学研究这一动物的小组中的一位古生物学家埃斯本说。
We have parts of the lower jaw that are huge compared with anything we've ever seen, " said Espen Madsen Knutsen, a palaeontologist on the team at the University of Oslo that studied the creature.
用猛犸骨头、下颚骨和头骨建造房屋，在旧石器时代的猛犸狩猎文化中很普遍。
The use of mammoth bones, jaws, and skulls to build structures was common among the mammoth-hunting cultures of the Upper paleolithic.
研究者们相信这种下颚的结构和特征与鸟类和非鸟类恐龙均具有联系。
The structure and characteristics of the jaw are associated with birds and not non-avi
问题：位于中央位置的门牙是非常容易受到腐蚀的，而下颚的门牙则直接则特别容易遭受磨损。
PROBLEMS: The central incisors are most vulnerable, but those in the lower jaw are particularly affected by teeth grinding, which 8 per cent of us do unconsciously.
年初，骑士队医发现在詹姆斯右下颚有赘物，其后，詹姆斯一直在等待活体组织检验结果（biopsy result）。
James had to wait for biopsy results in January after doctors at the Cleveland Clinic found a growth in the right side of his jaw.
7/13河豚下颚肌肉发达，能够像鳄鱼般凶狠，“咔嚓”一声咬断长喙下的猎物。
A boto's jaw muscles can snap its elongated beak down on prey with crocodilian ferocity.
一块带有三只臼齿的下颚骨在犹他州韦恩郡的千湖山1万英尺高处被发现。
A jawbone with three molars was found 10, 000 feet up Thousand Lake Mountain in Wayne County, Utah.
一块带有三只臼齿的下颚骨在犹他州韦恩郡的千湖山1万英尺高处被发现。
A jawbone with three molars was found 10,000 feet up Thousand Lake Mountain in Wayne County, Utah.
一块带有三只臼齿的下颚骨在犹他州韦恩郡的千湖山1万英尺高处被发现。
A jawbone with three molars was found 10,000 feet up Thousand Lake Mountain in Wayne County, Utah.
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