By 1-2 years: teeth are duller and the back teeth may have some yellowing.
1 - 2岁，牙齿钝化，后槽牙或许还有点发黄。
By 1-2 years: teeth are duller and the back teeth may have some yellowing.
2岁，牙齿钝化，后槽牙或许还有点发黄。
Sealants are thin, plastic coatings painted on the chewing surfaces of the back teeth.
牙齿保护胶是一种薄的塑料涂层，涂在磨牙的咀嚼面上。
Jaw muscles can provide about 200 pounds of force to bring the back teeth together for chewing.
颚肌可提供约200磅(90.72公斤)的力量，以便臼齿合拢咀嚼。
The chewing surfaces of back teeth are rough and uneven because they have small pits and grooves.
后磨牙的咀嚼面是粗糙和不平的，因为它们有小的凹陷和沟槽。
Fluoride in toothpaste and in drinking water protects the smooth surfaces of teeth but back teeth need extra protection.
牙膏和饮水中的氟化物能够保护牙齿的表面，但在后面的磨牙需要特别的保护。
Brush all surfaces of the teeth, including the outer, inner and chewing surfaces as well as the hard-to-reach back teeth and areas around fillings, crowns or other restorations.
牙齿每一面都要清洁到，包括牙齿外面、里面和咀嚼面，别忘了刷难以够到的后槽牙和包括填充物和牙冠在内的修复牙体周围。
Methods with fragments of the back teeth bow orthodontic traction treatment between technical joint jaws in 31 cases of patients with mandibular Angle fracture and watch curative effect.
方法在后牙用片段弓正畸技术联合颌间牵引治疗31例下颌角骨折的患者并观察疗效。
Mulan gave me a pathetic lower-teeth-revealing smile and grunted a charity chuckle. Then she got back to the topic at hand.
穆兰勉强一笑，露出下颚的牙齿，发出善意的轻笑。接着她又回到现有的话题上。
A Harvard anthropologist has proposed that using fire to cook food could be dated back to almost two million years and that it could explain hominid features like having a large brain and small teeth.
哈佛大学的一位人类学家提出，用火做饭可以追溯到近200万年前，这可以解释人类的一些特征，比如大脑大，牙齿小。
It was a noise that set one's teeth on edge and bristled the hair at the back of one's neck.
这是一种使人牙关紧绷、脖子后面的头发都竖起来的声音。
In the final unreasoning assault I overpowered the child's neck any jaws. I forced the heavy silver spoon back of her teeth and down her throat till she gagged.
在最后失去理性的“战斗”中，我控制了女孩的脖子和下巴，我强行将沉重的银勺从她的牙后面伸到嗓子直到她作呕。
The last teeth to appear (the second molars, found in the very back of the mouth on the top and bottom) have usually begun coming into place by your baby's second birthday.
到宝宝两岁时，最后的几颗牙齿（臼齿，就是位于口腔后方两侧的牙齿）就都开始各就各位了。
The invisible line being crossed is not on the back of the speaker's teeth, but in the listener's brain.
那条被逾越的隐形之线并不在说话者的牙齿之后，而是在听者的大脑内。
Back in the day, when we ate mammoth meat off the bone and didn't floss afterward, our teeth tended to fall out.
从前，当我们吃猛犸还要把肉从骨头上撕下来也不用牙线时，我们的牙齿很容易脱落。
Then she set her back against the gate, faced the six ruffians who were armed to the teeth, and to whom the night lent the visages of demons, and said in a firm, low voice.
她于是背靠着铁栏门，面对着那六个武装到牙齿、在黑影里露着一张鬼脸的匪徒，坚决地低声说。
These early pterosaurs all had a mouth full of teeth, usually small at the back and larger at the front.
这些早期翼龙嘴里都长满了牙齿，通常来说，小的牙齿长在后面，大的牙齿长在前面。
I went to brush my teeth. When I came back, my cat, cow, had knocked over the wastebasket and was playing with my baby-blanket scrap like it was the most exciting cat toy in the world.
然后我去刷牙了，等我回来，我的猫咪，高，撞倒了废纸篓，并正拖着我扔掉的小毛毯在玩，仿佛这是世界上最让它兴奋的小猫玩具。
Most babies get new teeth in this order: First the bottom two middle ones, then the top two middle ones, then the ones along the sides and back.
大部分的宝宝长牙顺序都如此：先长两颗下门牙，然后再是两颗上门牙，接着长两侧及后面的牙。
It's funny, looking back, how different we all were. I had the bushy hair, chipmunk face, and big teeth going on, which wasn't a great look for me.
回头看以前的摸样的确很好笑，那是我留着浓密长发，脸上有雀斑，还在换牙，这看起来的确不怎么好看。
When brushing your teeth, brush the back of your tongue, too, or scrape it with a tongue scraper.
刷牙时，还要刷刷舌根，或用刮舌器将舌头刮干净。
A gel that can help decayed teeth grow back in just weeks may mean an end to fillings.
科学家已经研制出一种凝胶，可以帮助蛀牙在几周内‘返老还童’，这可能意味着补牙的时代行将终结。
I was so mad I could feel the tears coming; I tried to force them back by grinding my teeth together.
我是如此的生气我都能感觉我的眼泪要出来了；我努力咬紧我的牙齿让眼泪流回去。
Britain has to take its teeth seriously again or we will soon be back to wooden dentures.
英国必须重新重视其牙齿来，否则我们很快戴上木质假牙。
Sleeping gon your back is also thought to exacerbate teeth grinding.
平躺睡觉也被认为是导致磨牙现象加重的诱因。 。
Dentist: I recommend that you come back for a deep cleaning, and then wait and see. Meanwhile, I will show you the right way to brush your teeth.
牙医：我建议你回来做深度清洁，然后等一等再看看。同时，我会教你正确的刷牙方法。
Dentist: I recommend that you come back for a deep cleaning, and then wait and see. Meanwhile, I will show you the right way to brush your teeth.
牙医：我建议你回来做深度清洁，然后等一等再看看。同时，我会教你正确的刷牙方法。
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