这些杯子上的彩色釉面使它们看起来更加精美。

The colorful ___enamels on these cups make them look more exquisite.

酸性食物可能会损害牙齿的珐琅质。

Acidic foods may damage the ___enamel on your teeth.

我买了一些高光泽的油漆来涂刷门框。

I bought some high-gloss ___enamels to paint the door frames.