但定期的清洁能使金属免于生锈。

But regular cleaning will keep the metal from rusting.

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因此，对不锈钢表面必须进行定期的清洁保养，以保持其华丽的表面及延长使用寿命。

Therefore, the surface of stainless steel must be regularly cleaned and maintained in order to maintain its gorgeous surface and extend the service life.

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个人专用的设备由个人定期清洁，公司公共设施则由保洁员负责定期的清洁保养工作。

Equipment exclusively used by individual employees should be cleaned regularly. Regular cleaning and maintenance of the public facilities would be handled by the company's cleaning staff.

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