This tooth has had a root canal filling. Do you remember when it was done X?
这颗牙齿的根管曾经补过。你记得什么时候补的吗？
This tooth has decayed quite badly. So I think it will relieve you a lot if I remove the tooth.
这颗牙蛀得很厉害，只有把它拔了，你才能摆脱痛苦。
This tooth is too bad to be filled any more. It has to be pulled. Do you agree to have it extracted?
这个牙齿坏得太厉害，已经不能补了，必需把它拔掉。您批准把它拔掉吗？
Nevertheless, this tooth is the first unarguable proof that crocodilians did indeed snack on dinosaurs.
但无可争辩的是，这颗牙是第一个鳄鱼目动物拿恐龙当点心的证据。
This tooth is in very bad condition. It needs a careful operation, which may last a little longer than usual.
您的这颗牙齿情况很糟糕，需要仔细地操作，可能要比平时花费更长一点的时间。
He quickly informed us about having knowledge of someone known as the tooth Fairy existing and that this tooth Fairy would trade a tooth for some money.
很快，儿子就告诉我们，他知道有个“牙齿仙女”，她会用钱来跟我们交换牙齿。
For several hundred years, because the flames of war are unceasing, this tooth several pass through the shift, its sale price is also expected to rise along with a migration.
几百年来，由于战火不断，这颗牙几经转移，它的身价也随着一次次迁移而看涨。
At this stage, the tooth can repair the weakened area with the help of fluoride and minerals in saliva.
在这个阶段，牙齿可以借助唾液中的氟化物和矿物质修复脆弱的部位。
The motion of a pendulum rocks this device so that it catches and then releases each tooth of the escape wheel, in turn allowing it to turn a precise amount.
钟摆的运动使这个装置晃动，如此一来这个装置能抓住擒纵轮的每一个齿，随后又将其释放，因而使其精确转动一段距离。
Unwind a clean segment from your storage finger, and repeat this procedure on each tooth, upper and lower.
从另外一根手指松出一段干净的，然后对上下腔的每个牙齿重复这个过程。
Although mastodon mitochondrial DNA has been sequenced before, the researchers say they were the first to do the analysis on DNA from the cell nucleus - in this case, using material from a tooth.
尽管此前已完成了美洲乳齿象的线粒体dna测序，研究者表示他们还首次实现了对细胞核dna的测序-在本例中使用的材料来自牙齿。
Hold the floss tightly against the tooth, and move it away from the gum. Slide it firmly down the tooth surface, combining this with a back-and-forth motion.
牙线紧紧地贴着牙齿，往上向远离牙龈的方向移动，再沿着牙齿邻面向下移动，把这个动作跟牙线的前后移动组合在一块。
This was soon followed by the discovery that the addition of fluoride and fluoride compounds to toothpaste would strengthen tooth enamel against decay.
随后不久发现了在牙膏中添加氟和氟化物可以加强牙釉质抵御腐蚀。
This is because particular isotopes of strontium dominant within a geological region are digested by individuals living there and incorporated into their tooth enamel.
依据是在一个地质区域内主要的锶同位素在被生活在该地的个体消化以后会被融进牙齿的釉质中。
Many of its models also look long in the tooth, which largely explains the 46% drop in operating profits in the first half of this year, compared with the same period in 2005.
许多款式也显得过时，这也是为什么与2005年同期相比，其生产利润在今年上半年狂跌46％。
Staying healthy has never been easy, but for those with a sweet tooth, this news is sure to boost morale.
保持健康从来都不是容易的，但对于那些喜好甜食的人来说，这个消息真是增强了士气。
Before you sign this contract, I would go over it with a fine-tooth comb if I were you. Make sure it's what you want.
我要是你的话，在签订本合同之前会仔细调查一下，确保符合自己的要求。
Among his first efforts in this area was "Tommy Tucker's Tooth" (1922), a short combining live action and animation made on assignment for a local dentist.
他在这个领域的第一个成就是“汤米·塔克的牙”(1922)，一部结合了生动动作和动画，描述给当地医生任务的短剧。
Depending on the sensor model the number of pulses resulting from each gear tooth may be 2 to 16, with the nature of the realtime processing ensuring that this occurs from the first tooth sensed.
根据速度传感器的型号，每一个轮齿产生的脉冲数可以是2- 16，并通过实时处理的特征，确保这一脉冲从第一个轮齿开始旋转时就能感应到。
This paper proposed a new method that was based on network node and applied to compute tooth contract-point line of engaged gears for different mesh position.
本文提出了一种以网络结点为基础，在齿面上的活动标架里，计算齿轮在不同啮合位置的接触点，以求得接触迹线的新方法。
This coating is made of calcium phosphate, (the material in) bone and tooth in mammals.
这层外衣由哺乳动物的骨头和牙齿中（的材料）的磷酸钙构成。
The best way to treat this problem is to extract the tooth before the pain and infection get worse.
解决这个问题最好的方法就是趁着疼痛和感染都没那么厉害的时候把这颗牙拔了。
Floss: This is essential to reduce tooth decay and gum disease. Why wouldn't you want to have the best smile possible?
用牙线清洁牙缝：这是一种必不可少的可以减少龋齿和牙床疾病的方式。您为什么不想拥有最好的微笑吗？
Floss: This is essential to reduce tooth decay and gum disease. Why wouldn't you want to have the best smile possible?
用牙线清洁牙缝：这是一种必不可少的可以减少龋齿和牙床疾病的方式。难道您不想拥有最好的微笑吗？
This aching tooth makes me feel wretched.
这一颗牙痛得我难受极了。
Crooked teeth are more difficult to keep clean. This usually results in a greater incidence of tooth decay and gum diseases.
阻生齿很难保持清洁，这往往造成蛀牙和牙龈病的发病率增加。
Crooked teeth are more difficult to keep clean. This usually results in a greater incidence of tooth decay and gum diseases.
阻生齿很难保持清洁，这往往造成蛀牙和牙龈病的发病率增加。
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