它是黑色的，外壳闪亮由光滑的塑料制成。

It's black and shiny, built with glossy plastic.

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与其他的宝螺相类似，它们的外壳非常光滑，擦亮得很优美。

Like other cowries, their shells are smooth and highly polished.

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所用的防紫外线的油漆与汽车喷漆的硬度相当，最外面一层是不光滑或者说是半抛光丙乙烯材质外壳提供了进一步的保护。

The UV-cured ink has a similar hardness to automotive paint, and a final coat of matte or semi-gloss acrylic further protects the colored surface.

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