瓷漆一种玻璃似的，烧制在金属、玻璃或瓷器上通常不透明的、保护性或装饰性的覆盖层

A vitreous, usually opaque, protective or decorative coating baked on metal, glass, or ceramic ware.

水晶面一个覆盖在钟表表面的、起保护作用的透明玻璃或塑料片

A clear glass or plastic protective cover for the face of a watch or clock.

头盔由坚硬材料如皮革、金属或塑料制成的头部覆盖物，由橄榄球队员、消防队员、建筑工人、摩托车骑手或其他人配戴，用以保护头部

A head covering of hard material, such as leather, metal, or plastic, worn by football players, firefighters, construction workers, motorcyclists, and others to protect the head.