单词:teeth enamel
单词:teeth enamel 相关文章
Health Report - Laying the Roots for Healthy Teeth in Young Children 健康报道 - 健康护齿从儿童做起 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 Bad teeth can be painful -- and worse. The
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel
Dont get your teeth veneered, Elmers girlfriend said. I know a girl who did that, and she has had bad breath ever since. Elmer had never heard of such a thing. Thats ridiculous, he said. Veneers are made of plastic. Plastic doesnt give you bad breath
Part eleven 第十一章 Hypersensitive Teeth 牙齿过敏 Good morning, Doctor Smith. 早安,史密斯先生。 I'm happy that I could get an appointment with you so quickly. 能这么快跟您预约好,我真高兴。 Many of my teeth have beco
Humans may be no less a part of the animal kingdom than lions, tigers and bears, but certain things set us apart. For instance, although like our mammalian cousins we use teeth to bite and chew food, were the only animals that brush after every meal.
Intermediate filaments - unlike microfilaments and microtubules, they are verystable. Instead of being stacked proteins, as in actin, intermediate filaments are built of interlocking proteins. A dense
Polymers-large molecules made up of many joined units of a more simple molecule. Examples are polysaccharides and polypeptides. Polypeptides; -chains of amino acids joined by peptide bonds. They are n
1. Use teeth whitening floss 用美白牙线 Tooth floss is an absolute must-have. We are sure that you already have this item in your bathroom. However, tooth floss with whitening components will not only clean your teeth. It will also help you keep
This is the VOA Special English Health Report. Bad teeth can be painful -- and worse. They can even be deadly. Infections of the gums and teeth can release bacteria into the blood system. Those bacteria can increase the chances of a heart attack or s
Human Teeth 人的牙齿 Teeth are the hardest thing in the human body. 牙齿是人体中最坚固的东西。 They are not made of bone. 它们不是由骨骼构成的。 They are made of enamel, gum and so on. 而是由牙釉质,牙龈等构成的
This is the VOA Special English Health Report. It might seem hard to imagine that a bad tooth could be deadly. More than 41,000 students in the Philippines brushed their teeth at the same time last month to set a world record, organizers said. The r
Common Chemical May Damage Teeth A chemical compound thats been linked to a number of health problems in animal studies may also damage tooth enamel in humans. BPA is found in many resins and plastics that people use everyday, such as water and baby
DAVID GREENE, HOST: Right from how smells can make us more attractive, let's turn to a multibillion-dollar global industry that is devoted to making you look more attractive, teeth whitening. Just walk into any pharmacy. Go online. You'll see them -
They are shaped like little chisels. 它们的形状就像凿子一样。 These cutting teeth always keep their sharp, chisel-like edge, for the front of each tooth is formed of a very hard stuff called enamel, while the rest of the tooth is made of
3 Foods to Avoid for Healthy Teeth 为了牙齿健康,不应该吃的三种食物 It is said that you are what you eat. This means that the food or drink intake plays a significant role in achieving healthy teeth and overall health. When eating, yo
It's not exactly a newsflash that one of the most important reasons to brush your teeth is to fight off cavities (not to mention prevent bad breath). But what if the way you brush your teeth actually makes you more susceptible to cavities, tooth deca
White Wine Can Rot Your Teeth 白葡萄酒可以让你蛀牙 In many countries, white wines such as Chardonnay are the preferred choice when people have seafood or poultry dishes. And they certainly dont stain your teeth, tongue or lips like red wine
D You are what you eat. This saying has provided scientists with clues(线索)about the diet of hominids- our early relatives of 3 million years ago. Studying carbon atoms(碳原子)locked up in tooth
Enamel is the hard outer tooth layer. 牙釉质是牙齿坚硬的外层。 The cavity gets larger by entering the softer second tooth layer, the dentin. 蛀牙洞到了牙齿的较软的第二层, 也就是牙本质时,龋洞就会变得大的多。
Part four 第四章 An Explanation of Dental Caries 有关龋齿的解释 Why do I have so many cavities,Doctor? 医生,为什么我有这么多蛀牙? It seems that every time I go to the dentist,there are at least three or four new ones. 好像