coating
noun [ C ] uk/ˈkəʊ.tɪŋ/ us/ˈkoʊ.t̬ɪŋ/
厚厚一层
a layer of a particular substance that covers a surface
a thick coating of chocolate 厚厚一层巧克力
The goggles have a laser-protection coating. 护目镜上涂有厚厚的激光防护层。
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