You know from experience if you've ever mixed them to make salad dressing, they don't mix too well. And you may know that if you heat them up, they mix much better.

经验告诉我们,你无法把它们混合做成色拉酱调料，他们不会很好的混合，但是你也知道,如果我们把他们加热，就能够混合的更好。

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What he's saying here is the following: "What we have learned over fifty years is that the disease model does not move us closer to the prevention of these serious problems.

他是这么说的：,“五十多年的经验告诉我们，疾病模型,不能让我们更有力地预防,这些严重问题。

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