是否在同一段落内多次重复使用了同一个词语或者词组？

Have you used the same word or phrase too many times within a paragraph?

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孔隙表面的粗糙度可控。模型可再生而多次重复使用。

The roughness of the pore surfaces can be controlled also.

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通过简单的过滤、溶剂洗涤回收催化剂，并能多次重复使用。

The catalyst can be recovered by filtration and washing with solvent, and reused for many times.

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