Lemons are so acidic they can actually take the protective enamel off your teeth.

实际上柠檬酸到可以把你齿上具有保护性质珐琅质去除掉。

First, the acid eats away the very hard outer layer of yourtooth, called the enamel. Inside the enamel is the dentin.

酸性物质会先腐蚀掉冠表层珐琅质。珐琅质所包覆便本质。

That strengthens teeth and encourages the growth of enamel crystals that build up a tooth's defenses against acid.

也添加了微量氟化物可以强化齿、促进珐琅质生长。

Fire had polished the sparkling enamel of its inner walls, sprinkled all over with mica-rich dust.

火力把珐琅质和发光泽为洞壁摩亮了，洞壁上满云粉屑。

They're false in that they're not made of what our teeth are made of: dentin and enamel.

“伪”由我们齿材料——本质和珐琅质——构成。

Dentists sometimes will fill a cavity by putting in a filling while the decay is still in the enamel.

当珐琅质遭到腐蚀时，医生有时候会采取补方式进行治疗。

It's spongy and has nerve endings, soyour tooth might be sensitive to sweets or cold if the decay reaches there.

本质如珐琅质坚硬，其中还含有很多神经末梢。因而，如果本质也受到了腐蚀，齿对甜食或过冷东西就会很敏感。

If it's properly treated, the decay will stop, and the enamel will harden, although the tooth will never be perfect again.

如果治疗得当，腐蚀将会停止，珐琅质也会重新变硬，中足，齿会像受腐蚀前那么完了。

Generally, as carnivores consume protein-rich meat, certain nitrogen isotopes accumulate in their tissues— including the enamel of their teeth.

一般来说， 当食肉动物食用富含蛋白质肉时，某些氮同位素会积聚在它们组织中——包括齿珐琅质。

The acid content in the Coke would destroy the enamel on your teeth and the sugar would soon lead to cavities.

可乐中酸成分会破坏齿上珐琅质，而糖分会很快导致蛀。

Teeth, for example, tend to survive decomposition very well, since their outer enamel coating is very hard and contains very little protein, if any.

以齿为例，由于齿外层珐琅质非常坚硬，蛋白质含量也非常低，因此齿易于分解。

Some people are more susceptible to cavities due to genes that may cause certain weaknesses, like softer enamel, but for most, high sugar consumption is to blame.

你可能会难以置信 目前有 92％ 国成年人有蛀有些人容易蛀，因为基因所导致珐琅质脆弱。

All these crumbling masses were covered with an enamel polished by the action of underground fires, and they glistened under the stream of electric light from our beacon.

所有这些大堆头分解了，受地下火力量上面浮起一层光滑珐琅质，一经探照灯照射，发出辉煌光彩。

Placoderm means " plate skin, " and plated they indeed were, with big chunks of bone, dentine and enameloid armor on their head and bodies.

Placoderm 意思“镀层皮肤” ，他们确实镀层，头部和身体上有大块骨头、本质和珐琅质盔甲。

As the drink enters your mouth, it's high acid content begins to erode the enamel on your teeth. And the microorganisms in your plaque start to feed off the sugar which can lead to cavities.

当饮料进到你嘴里，高度酸性物质开始腐蚀你齿珐琅质，齿菌斑中微生物会开始以这些醣类维生，导致蛀。

If you're picturing skin covered in human teeth - just stop, that's terrifying These " skin-teeth" were really more like bumps made of dentine, which is the hard tissue found underneath the enamel of your teeth.

如果你想象人类齿覆盖皮肤——停下来，那太可怕了。 这些“皮肤齿” 实际上更像由本质构成肿块，本质齿珐琅质下面硬组织。