Teeth have a hard surface layer called enamel.

牙齿有一层叫做釉质的坚硬表层。

Made from cast iron, it is finished in graphite enamel.

该物由铸铁制成，表面以石墨搪瓷抛光。

They click upon themselves as the breeze rises and turns many-colored as the stir cracks and crazes their enamel.

当微风吹起，它们就就咯喇喇响，当它们的珐琅质被搅动开裂时，它们会变成五颜六色。

Another lasting symptom commonly is enamel hypoplasia.

另一个持久的症状通常是牙釉质发育不全。

In more severe cases, all the enamel may be damaged.

较为严重者，所有珐琅都可能受到损害。

"Acid weakens enamel and makes it softer," Dr. Jones says.

“酸会损伤牙釉质，使其软化。”Dr . Jones说。

All of a sudden there was nail enamel in these strange colors.

她突然之间拥有很多新奇色彩的指甲油。

Tooth enamel analysis revealed they ate fruit, nuts and leaves.

—经牙釉质分析后显示，他们以水果，坚果和树叶为食。

An analysis of her tooth enamel suggests she ate fruit, nuts and leaves.

通过对牙釉质分析，她以水果，坚果及树叶为食。

The stomach acid from repeated vomiting can severely erode tooth enamel.

反复的胃酸呕吐会严重损坏牙釉质。

The decay reaches into the dentin, where it can spread and undermine the enamel.

当龋坏扩散破坏到釉质下方，就进入了牙本质。

A white spot appears on the enamel where the tooth has started to weaken inside.

牙釉上有个白色斑点，对牙齿内部的保护就减弱。

The enamel tiger heads on the clutch bags were a detail I found in the 1970s archives.

手抓包上的搪瓷虎头就是我在20世纪70年代归档时发现的一处细节。

First, fluoride makes your tooth enamel stronger and less likely to suffer acid damage.

首先，氟能够使你牙齿的釉质更坚固，同时降低酸性的腐蚀程度。

She used a slither of tooth enamel the size of a nail clipping to trace his origins.

埃文斯通过大小相当于小钉的牙齿瓷釉（珐琅）质，来确定他的来历。

While evidence that bleaching erodes enamel is inconclusive, it may increase sensitivity.

“太多次就会产生伤害。” 虽然漂白侵蚀珐琅质的证据不够充分，但是这也许会增加敏感性。

Coffee bean stained floors contrast with 'Hibiscus' walls and high gloss white enamel ceilings.

咖啡豆染色的地板，与“芙蓉”墙壁和挑高的高明亮白色搪瓷天花板形成对比。

But if the decay continues and breaks through the surface of the enamel, the damage is permanent.

但是如果龋坏继续进行穿过表面的牙釉质，将会形成永久性损害。

"Your dentist can see if you're grinding, because areas of the tooth enamel will be worn smooth."

“你的牙医可以检查出你有没有磨牙，因为牙齿珐琅质的磨损区会是光滑的。”

Bacteria living on teeth convert sugar into lactic acid, which erodes enamel and causes tooth decay.

牙齿表面的细菌会把糖转变成乳酸，腐蚀珐琅质并导致蛀牙。

Rinse after a few minutes, because long-term exposure to the acid in the lemon can harm tooth enamel.

几分钟之后用清水漱口，因为长期接触柠檬酸对牙釉质有伤害。

This factory produces China′s traditional hand craft：cloisonne，or Beijing enamel，as it is called.

这个厂主要生产我国传统工艺品：景泰蓝制品，也叫北京烧瓷。

photo above: This enamel-topped table has funny little squirrels peeking out throughout the design.

上图：瓷面桌上面有很多探出头来的小松鼠，煞是可爱。

The real light comes from the fire, at the bottom of a small stove adorned with yellow and green enamel.

真正的光源是炉底的火，小小的炉灶上涂着黄色绿色的釉彩。

In young children, teeth that have recently emerged have weak enamel and are highly susceptible to acid decay.

最近表明，小孩子的牙釉质极易受酸侵蚀。

I put the two dinners and two forks on the enamel tabletop, then drink at least half of my beer before sitting down.

我把两份饭和两副刀放在搪瓷餐桌上，坐下前我喝下至少半杯啤酒。

The other kept munching scented pastilles, which he took with an affected gesture out of an oval box of lilac enamel.

另一个则装腔作势地自一个椭圆的淡紫色珐琅盒子里取出一剂芳香含片来，大嚼特嚼。

Their technique measures the warping of tooth enamel inflicted by radiation, detected in electron paramagnetic resonance.

他们使用电子顺磁共振测定了辐射对牙釉质的影响。