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1·Teeth have a hard surface layer called enamel.

牙齿有一层叫做釉质的坚硬表层。《牛津词典》

2·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。《柯林斯英汉双解大词典》

3·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。

4·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。

5·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。

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

“酸会损伤牙釉质，使其软化。”Dr . Jones说。

7·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。

8·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。

9·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。

10·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。

(1)enamel coating搪瓷护膜；搪瓷表层

(1)porcelain enamel搪瓷；瓷釉

(1)enamel paint瓷漆

(1)coal tar enamel煤焦油磁漆