Employing cloth dyed in salt water filled with iron filings, Mr. Ervell used rust to riff subtly on a theme of decay.

利用在充满铁屑的盐水里染色的布，Ervell先生使用铁锈巧妙地重复关于一个衰败的主题的颜色。

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We put them through mud and salt to make sure they won't rust.

我们让它们通过泥浆和盐碱滩以保证不生锈。

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Steel surface should be no visible grease and dirt, and there is no attachment not firm scale, rust, paint and other impurities (water soluble salt and welding residue).

钢材表面应无可见的油脂和污物，并且没有附着不牢的氧化皮、铁锈和油漆涂层及其它杂质（水溶性盐和焊接残渣）。

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