The labio-dental sounds are articulated by the lower lip against the upper teeth, eg. /f/.
唇齿音由下唇与上齿连接发出，例如 /f/。
Mouth with the incisor teeth closing level, or with upper teeth slightly overlapping the lower.
嘴巴呈齿剪状或水平咬合，或稍微的上超咬合。
The alveolar ridge is also referred to as the alveolar process. This inferiorly directed ridge of the maxilla houses the upper teeth.
牙槽嵴也被称为肺泡的过程。这下有脊的上颌骨上的牙齿的房子。
The sound is created by the tongue working with the upper teeth to force air over the surface of the tongue and into the lower teeth.
通过舌面与上齿共同作用强迫气流略过舌面，气流在进入下齿后面时发出声音。
Jaws and teeth strong with a perfect, regular and complete scissor bite, i. e. upper teeth closely overlapping lower teeth and set square to the jaws.
拉不拉多犬的下巴与牙齿有完美的结合，以交剪的方式完全咬合，及上面的牙齿与下面的牙齿紧密的重叠。
The species is the only known modern frog species with lower teeth, though certain other species with upper teeth do have toothlike structures on the lower jaw.
这是现代青蛙中唯一一种已知下颌长牙的蛙类物种，虽然其他上颌长牙的蛙类在下颌肯定也有类牙构造。
Teeth of good size. Jaws strong with a perfect, regular and complete scissor bite, i. e. upper teeth closely overlapping lower teeth and set square to the jaws.
牙齿形状好，强壮的颌，完美的规则的剪刀状咬合，比如上齿紧紧覆盖下齿在口中构成三角形。
To see how the brain responds to pain emanating from different teeth, the researchers used fMRI to monitor changes in activity when the upper tooth or the lower tooth was zapped.
为了分析大脑如何对不同牙齿的痛疼作出反应，研究人员利用功能磁共振成像监视上牙或下牙在受到脉冲刺激时的活动。
Her upper canine teeth are more like the stubby teeth of modern people than the long, sharp ones of chimps.
她的上犬齿比起黑猩猩的锋利牙齿，更接近现代人类短平的牙齿。
"The palettes," replied the dental professor, "are the front teeth, the two upper ones."
“瓷牌，”那位牙科医生回答说，“就是门牙，上排的两个门牙。”
Wang Na was born with no upper jaw bone or teeth, making eating and speaking very difficult.
王娜天生就没有上颌骨和牙齿，这使得她吃东西和讲话都很吃力。
But even with the dinosaur's upper-jaw teeth hinging outward, they could likely still chew with their mouths closed.
不过，即使恐龙的上颌牙齿向外翻，他们吃东西的时候大概还是闭着嘴。
Ardi's upper canine teeth are more similar to stubby human teeth than sharp chimpanzee teeth.
—与黑猩猩锋利的牙齿相比，“阿蒂”的犬齿更像人类的短平的牙齿。
When Lizzie smiled, Paige suddenly noticed her upper front teeth were pitted with holes.
当她笑时，Paige突然注意到她上门牙全是洞。
A tooth adapted for tearing apart flesh especially one of the last upper premolar or first lower molar teeth in carnivorous mammals.
裂齿，食肉齿适合于撕裂肉的牙齿，尤指食肉哺乳动物最后上前臼齿之一或第一个下臼齿。
Daily before meals to relax the body, lips close, then the upper and lower teeth have quietly tapping rhythm.
每日三餐前坚持全身放松，口唇轻闭，然后上下齿有节律地悄悄叩击。
The teeth should be of good size, with the lower incisors fitting closely behind the upper incisors; a very slight space not to be regarded as a serious fault.
牙齿形状应该好，下门牙应紧贴上门牙的后部，非常微小的空隙不会被认为是严重缺陷。
The reason for these may be the occlusal relationships of upper and lower molars, dental physiological function of the teeth, and the difference in economic subsistance between the groups.
磨耗速率的组内、组间差异与上下颌牙齿咬合关系、口腔咀嚼生理以及不同经济文化古人群的食物构成等差异有关。
One group of whales has, instead of teeth, long strips of bone, hanging from their upper jaw. This is the baleen whale, the largest animal in the world.
有一类鲸鱼，用从上额骨垂下来的长条状的骨头代替牙齿，它就是须鲸，是世界上最大的动物。
Doctor: His upper lip has been cut. Several teeth have become loose. One of them has to be ex acted; some others need re-fixing.
医生：上嘴唇破了，有几颗牙松动，其中有一颗需要拔掉，其他的需要固定一下。
Puffer fish of the upper and lower teeth are connected together, as if a sharp blade .
河豚的上下颌的牙齿都是连接在一起的，好像一块锋利的刀片。
Simply speaking there are normally 20 teeth in the upper jaw and 22 in the lower jaw.
简单来说，通常上颚部分有20颗牙齿，下颚部分有22颗牙齿。
As Tom wended to school after breakfast, he was the envy of every boy he met because the gap in his upper row of teeth enabled him to expectorate in a new and admirable way.
当汤姆吃过早饭去上学的时候，在路上遇到的每个孩子都羡慕他，因为他上排牙齿的缺口能够使他用一种新的方法吐唾沫。
Upper front teeth that are paper thin, with the enamel almost completely worn away, and teeth that hurt.
上端前齿过薄，牙釉质几乎消失，牙齿也有损伤。
"I heard what they were thinking," he growled, his upper lip curling slightly back over his teeth.
“我听到了他们在想什么。”他咆哮着，上唇微微卷曲起来，露出了牙齿。
Her dark hair waved untidy across her broad forehead, her face was short, her upper lip short, showing a glint of teeth, her brows were straight and dark, her lashes long and dark, her nose straight.
她黑发蓬蓬松松地飘拂在宽阔的前额上，脸是短短的，上唇也是短短的，露出一排闪亮的牙齿，眉毛又直又黑，睫毛又长又黑，鼻子笔直。
Misalignment of teeth between the upper and lower jaws can grind down the teeth and cause problems in chewing. Elsewhere, it is a cosmetic problem.
下颚间的牙齿咬合不正会磨损牙齿并造成咀嚼问题，此外，也会造成外表美观的问题。
Misalignment of teeth between the upper and lower jaws can grind down the teeth and cause problems in chewing. Elsewhere, it is a cosmetic problem.
下颚间的牙齿咬合不正会磨损牙齿并造成咀嚼问题，此外，也会造成外表美观的问题。
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