生物人类学家克里斯蒂·特纳是分析人类牙齿的物理特性变化的专家。
The biological anthropologist Christy Turner is an expert in the analysis of changing physical characteristics in human teeth.
对牙齿的分析还表明，纳-德内人和爱斯基摩-阿留申人后来还有过两次迁徙。
Tooth analyses also suggest that there were two later migrations of Na-Denes and Eskimo-Aleut.
糖通过被那些存在我们牙齿的引起斑块的细菌作为一种食物来源，可以导致牙齿腐烂。
Sugar can cause tooth decay by being used as a food source for the bacteria found on our teeth, which causes plaque.
在很长一段时间里，我们认为所有有牙齿的鲸鱼，包括抹香鲸和虎鲸，彼此都是密切相关的。
For a long time, we assumed that all whales that had teeth including sperm whales and killer whales were closely related to one another.
四足动物的脖子通常很长，这样它们就可以毫不费力地够到食物，但是大象的脖子很短，这样它就可以更容易地支撑它巨大的头和沉重的牙齿的重量。
The neck of four footed animals is usually long, to have them reach their food without difficulty, but the elephant has a short neck, to make him more easily support the weight of his huge head and heavy teeth.
她花了两年的时间试验，以得到一个既美味又不伤害牙齿的食谱。
She spent two years conducting trials to get a recipe that was both tasty and tooth-friendly.
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.
它们牙齿的数目都是混合的；宽吻海豚有88颗牙齿，伪虎鲸有44颗牙齿，全齿鲸有66颗。
Their number of teeth is mixed; a bottlenose has 88 teeth, a false killer whale has 44 teeth, and a wholphin has 66.
在她父亲的允许下，她用接下来的两年时间在网上进行调查研究，并进行实验。最后研制出既美味又不伤牙齿的食谱。
With her dad's permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth-friendly.
切记牙齿的内侧和咬合面都要刷到，舌苔也要刷哦。
Remember to brush the inside and chewing surfaces of your teeth, as well as your tongue.
但是幸运的是，有许多美白牙齿的产品可供选择。
But luckily for us, there are tons of whitening products to choose from.
喝红茶可以防止牙菌斑的形成，还可以杀死感染牙齿的细菌。
Drinking black tea has been found to prevent dental plaque formation and to kill bacteria that infect teeth.
这听起来就像我用我的舌钉敲击我牙齿的声音，如果我有的话。
That’s what it might sound like if I had a tongue stud, hitting my teeth.
尘世之外：冯医师甚至在他的CT扫描仪上截取到烂牙齿的图片
Out of this world: Dr Fung was even able to capture rotting teeth on his CT scan
那个时候也采用锶，它有助于坚固牙齿和减少牙齿的敏感。
Strontium was introduced at this time as well, which serves to strengthen teeth and reduce sensitivity.
一些专家还认为，其所含的黄酮类物质可能抑制牙齿的菌斑。
And some experts believe its flavenoids may inhibit the growth of plaque on teeth.
那就是说，牙刷柄应该合手，牙刷头应该合嘴并能刷到牙齿的每个面。
That means the toothbrush handle should fit comfortably in your hand and the toothbrush head should feel comfortable in your mouth and be able to reach every tooth surface.
奈特说：“但是，我们不知道这些没有了牙齿的懒猴能否在野外生存。”
"But we just don't know whether these lorises will be able to survive without their teeth, " Knight says.
这种矫正使用一套定制的完全适合你的牙齿的可移除的校准器。
It USES a series of removable clear aligners that are custom-molded to fit over your teeth.
比如，你可以从左至右从顶端刷你的牙齿的外面，然后移到里面从右至左。
For example, you can brush the outer sides of your teeth from left to right across the top, then move to the inside and brush right to left.
研究人员为参与者提供了有意义的“线索”(比如牙齿的种类)。
The researchers presented participants with a meaningful "cue" (e.g. type of tooth).
拥有美丽的牙齿很重要，女人每次想到你牙齿的时候他们会想到亲你。
It is very important to have nice teeth, women think about it every time they consider kissing you.
根据牙齿的大小和位置，专家们还推测，这是一种大型猫科动物的头。
Because of the size and position of the teeth, they also deduced that it was the head of a large cat.
然而，尽管有那些女性装饰品，但骨盆骨和牙齿的详细分析证实木乃伊是个男孩。
However, detailed analysis of pelvic bones and teeth confirmed the mummy is a boy despite its female adornments.
糖通过被那些存在我们牙齿的引起斑块的细菌作为一种食物来源，可以导致牙齿腐烂。
Sugar can cause tooth decay by being used as a food source for the bacteria found on our teeth which causes plaque.
不过桔子汁高蔗糖含量会损坏牙齿的珐琅质，也能增加患2型糖尿病的风险。
But the high sucrose content of orange juice attacks the enamel on your teeth and can increase the risk of Type 2 diabetes.
锯脂鲤属的有着锋利牙齿的水虎鱼是和纳氏锯脂鲤是世界上最残忍的淡水鱼类。
The razor-toothed piranhas of the genera Serrasalmus and Pygocentrus are the most ferocious freshwater fish in the world.
钓上的最后一条鱼不是鳕鱼也不是黑线鳕，而是鳗鱼样的，可怕的露出牙齿的东西。
The last fish turns out to be no cod or haddock but something eel-like, scary and toothy.
医生、牙医和化学家们开发出的牙粉中含有研磨牙齿的物质，如砖灰、碎瓷器、陶器和乌贼。
These powders were developed by doctors, dentists and chemists and included substances very abrasive to teeth, such as brick dust, crushed China, earthenware and cuttlefish.
医生、牙医和化学家们开发出的牙粉中含有研磨牙齿的物质，如砖灰、碎瓷器、陶器和乌贼。
These powders were developed by doctors, dentists and chemists and included substances very abrasive to teeth, such as brick dust, crushed China, earthenware and cuttlefish.
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