1. This metal burnishes well.
    这种金属容易擦亮。

2. burnish

2. The stone burnishes well.
    这种石头容易磨光。

1. 磨光：介质的功能有:1.磨擦(abrade),2.磨光(burnish),3.分离(separate)工. 介质材料有下列几种:

2. 磨：burning 燃烧的 | burnish 磨 | burnisher 磨擦者

3. burnish的解释

3. 擦亮：burningwaters 石油 | burnish 擦亮 | burnisher 抛光器

1. 改善（形象）
    To burnish the image of someone or something means to improve their image.

    e.g. The European Parliament badly needs a president who can burnish its image.
           欧洲议会急需一位能改善其声望的主席。

1. the property of being smooth and shiny

    Synonym: polishglossglossiness

1. polish and make shiny

    e.g. buff the wooden floors
           buff my shoes

    Synonym: bufffurbish