After the wind, there was a layer of dust on the desk.

大风过后，桌上落了一层灰。

《新英汉大辞典》

Make sure that there is a market for what you want to publish before you have a 300-page draft gathering dust in your bottom desk drawer; I did that once, and it is a bittersweet experience at best.

在你的底层抽屉里的三百页的草稿上落上尘埃之前，你需要确信将要出版的东西有市场。

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A collection of dust on the desk.

书桌上积著大量的尘土。

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If any elements of your file are missing, you can expect that file to sit on a desk and collect dust.

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