下一步需要设计一项前瞻性调查，这样我们就能知道是否真的存在这些观测到的差异。

The next step is to design a prospective study so that we can see if these observed differences are actually real.

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如果能够在项目计划中找到立足点，则可以在设计中融入前瞻思想。

If you can muster a toehold in the project plan, be forward-looking in your designs.

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大型的癌症风险研究越来越多的被设计为所谓的前瞻性研究，就像这个研究一样。

Large cancer risk studies have increasingly been designed as so-called prospective studies, like this one.

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