Chewing gum, once bought primarily by adolescent boys, is now featured in commercials as a breath freshener and teeth cleanser for use after a meal.
曾经主要由青少年购买的口香糖，现在在广告中被用作饭后的口气清新剂和牙齿清洁剂。
Baring the teeth in a hostile way, as noted by Charles Darwin in the nineteenth century, may be a universal sign of anger.
正如查尔斯达尔文在19世纪指出的那样，怀有敌意地露出牙齿可能是人们表现愤怒情绪的通用表情。
In the morning, I brush my teeth as usual.
早晨，我像往常一样刷牙。
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.
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。
His skin looked as if it was burnt and sore, and his teeth were yellow, but there were cracks in them with a red stain.
看上去像是被烧焦了的皮肤，又像是溃烂了的样子，以及满嘴的黄牙，裂开了，布满了红色的斑点。
Acid attacks can happen as a result of plaque bacteria acting on the sugars in our diet, or as a direct result of the acids in food dissolving away the enamel on the surfaces of our teeth.
酸袭击可能发生，由于牙菌斑的细菌作用于我们饮食中的糖，或作为一个直接结果，酸溶解食物上溶掉了在我们牙齿表面上的珐琅。
The National Museum of Dentistry in Baltimore, Md., has on display one of Washington's lower dentures—made from gold, ivory and lead, as well as human and animal teeth.
—马里兰州巴尔的摩国家牙科博物馆的展品中有华盛顿的下半副假牙，用金子、象牙、铅还有人和动物的牙齿制成。
Tyler's upstairs in my bedroom, looking at his teeth in my mirror, and says he got me a job as a banquet waiter, part time.
泰勒在楼上我的卧室里,在镜子里仔细检查着他的牙,然后说他帮我找了份酒店待者的兼职.
Scott's film was initially pitched as "Jaws in space" and Giger's alien features the requisite razor-blade teeth and unreadable, implacable air.
斯科特的《异形》最初被称作是“太空中的《大白鲨》”，而吉格创造的异形也以刀片般锋利的牙齿和神秘无情的形象著称。
Obese, plagued with decayed teeth, the mummy also suffered from cancer, as a metastatic deposit in the pelvic bone revealed.
骨盆中转移性癌细胞的沉积物表明这具身材肥胖，满口无牙的木乃伊也曾遭受过癌症的折磨。
As bone and teeth are very similar in their structure, a team of scientists at the National Institute for Health and Medical Research in Paris tested if the hormone could stimulate tooth growth.
不过近期的研究表明，它在刺激骨质再生方面作用也非同小可。由于骨骼和牙齿在结构上非常相似，因此巴黎一家医学研究所的科学家对这种激素能否刺激牙齿生长进行了试验。
It had feathers and other traits of living birds but also vestiges of a reptilian past, such as teeth in its mouth, claws on its wings, and a long, bony tail.
始祖鸟拥有羽毛，它身上既有现代鸟类的特征，也有远古爬行动物的痕迹，例如口中有牙齿，翅膀上有爪子，还有一条硕长的骨质尾巴。
And in leisurely manner, as if he were quite unconcerned, he took some walnuts out of his pocket, cracked them open with his teeth and ate the kernels.
他好像一点儿也没有担心害怕的样子，逍遥自在地从衣袋里拿出几个核桃，咬开后，吃着核桃仁。
Enamel is almost completely transparent in the near-infrared spectrum, allowing OCT to create highly detailed images of teeth as well as soft tissue.
由于珐琅质在近红外光谱端近乎完全透明，因此oct可以形成牙齿和软组织的高精确图像。
Mr Taleb cut his philosophical teeth in the basement of his family home in Lebanon during the long civil war there (another Black Swan), devouring books as mortars flew overhead.
在漫长的内战（又一只“黑天鹅”）时期，塔布勒在黎巴嫩家中的地下室里长出智齿。迫击炮弹在头顶乱飞，他兀自大啃书本。
Mr Kallasvuo is the quintessential product of a company that has grown too cautious and inward-looking—a Nokia lifer who cut his teeth as a company lawyer and visibly wilts in the limelight.
康培凯先生就是诺基亚公司变得过于胆小谨慎的典型产物---作为公司律师他初学乍练，然而明显在聚光灯下显得有些畏畏缩缩，一个活生生的诺基亚“囚徒”。
The nicotine in cigarette smoke can not only make your teeth (and the walls of your home) brown, but it's also notorious for staining fingers and nails as well.
香烟中的尼古丁不仅会使你的牙齿以及你家的墙变黄，而且还会使你的手指和指甲变色。
Your teeth will never look as perfect as the models' in Colgate ads.
你的牙齿看上去永远不会像高露洁牙膏广告的模特那么完美无缺。
For the first two days this felt like a slight hassle, but in time it became a part of my daily routine, as instinctive as brushing my teeth.
开始我感到这样做有点麻烦，但后来它成为我的日常生活习惯，就像每天要刷牙一样自然。
Related to calcium-and just as important-is Vitamin D. it is essential in the diet to promote absorption of the calcium you consume and for the formation of your baby's bones and teeth in utero.
与钙相关，而且同等重要的是维生素d。维生素d是饮食中必不可少的，它促进所摄入钙的吸收和宫内宝宝骨骼和牙齿的形成。
It is assumed that it was rubbed onto the teeth using the fingers, as the toothstick - the forerunner to the toothbrush - was not in use at that time.
据猜测把手指当成牙棍（牙刷的前身，那个时候是没有牙刷的）将牙粉擦到牙齿上。
American officials point out that the moratorium as it stands now has no teeth and that moral suasion hasn't stopped whaling nations from hunting in greater and greater Numbers.
美国官方指出该协议如今并没有什么威慑力而且道义方面的劝说也不能阻止捕鲸国越来越多地猎杀鲸鱼。
Harry scowls nonstop, as if he's channeling his inner Mr. Darcy. Hermione and Ron must have food stuck in their teeth because they don't crack a smile either.
哈利不停的皱眉，好像他无法跨越心中的黑暗，赫敏和罗恩好像嘴里含着食物，没有一丝笑脸。
Her goal was the same as mine - for my teeth to remain in situ for as long as possible.
她的目标和我一样——让我的牙齿尽量长时间地留在原处。
Even pounded into the mud until he swallowed it, as he was in a football match in “Up in the World” (1956), he emerged as “that dangerous little man”, baring his teeth like a tiger.
就像他于1956年出演的电影《平步青云》中一场足球赛那样，即使被捣成烂泥，也要坚持到把烂泥吞下去。 电影中，他扮演“富有攻击性的矮小子”，这小子露出像老虎一样的牙齿。
Apples also act as a toothbrush, cleaning teeth and killing bacteria in the mouth, which may reduce the risk of tooth decay.
苹果还有牙刷作用，洁齿和杀灭口腔细菌，减少龋齿的危险。
He took some false teeth, still mounted in their plaster mold, out of the glass case and put on the table a fistful of instruments which he arranged in size order, as if they were on display.
他从玻璃盒子里取出些假牙，都是还套着石膏模的，又把一堆仪器按大小顺序摆在桌上，跟搞展览似地。
He took some false teeth, still mounted in their plaster mold, out of the glass case and put on the table a fistful of instruments which he arranged in size order, as if they were on display.
他从玻璃盒子里取出些假牙，都是还套着石膏模的，又把一堆仪器按大小顺序摆在桌上，跟搞展览似地。
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