通过这种方式测试关键字，然后选用效果最佳的放到网站，从而提高自然搜索的排名。

Test your keywords this way and use the best ones on your site to boost your organic search results.

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白色和再造石中性色调为商场打造自然背景，使租户商品展示达到最佳效果。

A neutral colour palette of white and reconstituted stone creates a natural background for the mall, showcasing its tenants and their merchandise to maximum effect.

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本文所得到自然对流空气层的最佳间距和各因素变化对于双层屋面隔热效果的影响，都可以为工程应用提供一定的参考。

The study proposed the optimal spacing for natural convection layer and the effects of some factors on the thermal performance of the roof which can give the references for applications.

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