维多利亚时代流传着一则箴言：“造物主赋予人类嘴唇以遮掩牙齿”。这暗示了在严格意义上的牙科学诞生之前，口腔的卫生状况往往非常糟糕。
"Nature gave us lips to conceal our teeth," ran one popular Victorian maxim, alluding to the fact that before the birth of proper dentistry, mouths were often in a shocking state of hygiene.
唾液是由口腔的唾液腺分泌出来的。
有效提高牙齿及口腔的免疫能力。
Effective exaltation tooth and the immunity ability of the mouth cavity.
用口腔的后半部分发音！
因此他认为多喝白茶有助于口腔的清洁与健康。
Therefore he concludes that drinking more white tea is helpful to the buccal cleaning and health.
噪音的音色充分显露出来，口腔的噪音就消失了。
The timbre of the laryngeal sound stands out, and oral noise decrease.
果汁中的柠檬酸会调节口腔的PH值，杀死造成口气的细菌。
The citric acid in the juice alters the pH level in your mouth, killing the bacteria that cause bad breath.
古希腊和罗马的文学详述了牙签的使用，它被用来保持口腔的清洁。
Ancient Greek and Roman literature discusses the use of toothpicks, which were used to keep the mouth clean.
口腔周围明显的痕迹是由充满死者口腔的金属或汞合金导致的干扰线。
The apparent marks around the mouth are interference lines caused by metal or amalgam fillings in the dead man's mouth.
夜磨牙是口腔的一种异常功能，其发生的原因，目前还不十分清楚。
Night molar is an abnormal function of the mouth, and its cause, is not very clear.
此病通过人与患者或带菌者的排泄物和口腔的直接或间接接触传染。
Transmission is by direct of indirect fecal-oral transmission from a patient or carrier.
十二指肠钩虫第4期幼虫口腔的长宽几乎相等，但美洲钩虫宽大于长。
In the 4th stage larvae, the length of mouth cavity of A. duodenale is almost equivalent to its width, but that of N. americanus is shorter.
刚开始用，会感觉有点奇怪，但当我明白他们的作用后，我很喜欢用了它之后口腔的感觉。
At first it was weird, but after I realized what it was for, I really like how my mouth felt after using it.
近年来，我们开始看到生活于人体不同部位包括肠道，皮肤，口腔的微生物群的全貌。
In recent years, we have begun to obtain a comprehensive picture of the composition of the human-associated microbiota in various niches, including the gut, skin and oral cavity.
他还指出这类鲸宽阔的头骨能够加大口腔的容量，这反过来提高了吸食海水进食的效率。
The whale's wide skull would have boosted the volume of its mouth and, in turn, the efficiency of suction feeding, he suggests.
因此，用于口腔的金属材料除了需要具备良好的机械性能外，耐腐蚀性能也是一个重要的考察指标。
Therefore, other than the excellent mechanical characteristics, the corrosion resistance should be treated as the important criteria about testing quality of dental alloys material as well.
有显示说常吃木糖醇有助于减少齿菌斑——蛀洞，牙石，牙渍形成的第一步——还有提高口腔的健康。
Regular use of Xylitol has been shown to help reduce dental plaque - the first stage of cavity development, tartar formation and tooth staining - and promote better oral health.
为了理解当你的牙齿龋坏时都发生了什么，了解你口腔的自然状况是有益的。以下是几个基本组成要素。
To understand what happens when your teeth decay, it's helpful to know what's in your mouth naturally. Here are a few of the elements.
早在一百万年以前，我们祖先口腔的形状、结构，喉和声道的其它部分足以使他们讲话，尽管无法讲很多话。
It is thought that the shape and mechanics of the mouth, throat and other parts of the vocal tract of our ancestors from one million years ago would have allowed them to speak - but not a lot.
这个研究提供了更多的经常看牙科医生和照顾你的口腔的理由，因此你不处在如此多的冠状动脉事件风险中。
This study provides more of a reason to see the dentist regularly and take care of your mouth so you are not at as much at risk for coronary events.
他的舌头保留了足够长度，让他还可以勉强说话，不过他口腔的形状变了，舌头遭到损伤，吃东西非常困难。
He retained enough of his tongue that he was able to compensate for speech, but the altered shape of his oral cavity and the damage to his tongue made eating difficult.
口腔的副作用仍然是最主要的，即使是使用了许多药物来防止及治疗，其中一个副作用就是口腔念珠菌感染。
Oral side effects remain a major source of illness despite the use of a variety of agents to prevent and treat them. One of these side effects is oral candidiasis.
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.
研究者再用棉签刮取志愿者口腔的细胞，这样他们就能确定志愿者是否含有或者是否含有多个争对PTC的“敏感型”受体基因。
Swabs were also taken of the volunteers' cheek cells so that researchers could determine whether they carried none, one, or two 'sensitive' copies of the taste receptor gene that allows taste of PTC.
结论对老年人牙体敏感症只要诊断正确，治疗方法得当，均能收到理想效果，能显著延长牙齿寿命，以维护老年人口腔的身心健康。
Conclusion By correct diagnosis and proper treatment, tooth sensitivity in aged can get satisfactory effect, and those teeth can be maintained much longer.
脑膜炎是通过和病人近距离直接接触，沾染病人鼻子以及口腔的分泌物而传播。但是和病人偶尔的接触并不会传染，同时该病也不会通过空气传播。
It can be contracted by direct close contact with discharges from the nose or throat of an infected person, but not through casual contact or breathing the same air.
一番彻底的刷牙处理有助你清洁口腔。
一番彻底的刷牙处理有助你清洁口腔。
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