尽管这些研究不能证明因果关系，但是很多健康专家和食品公司宣称，他们已经证实吃早餐会防止体重增加。

Though these studies could not show cause and effect, many health authorities and food companies asserted that they proved that eating breakfast protects against weight gain.

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尽管这些研究并不能证明其中的因果关系，但很多健康专家和食品公司都宣称他们已经证实，吃早餐可以防止体重增加。

Though these studies could not show cause and effect, many health authorities and food companies asserted that they proved that eating breakfast protects against weight gain.

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尽管科学家们对有关的具体细节仍然不能确定，但他们已经开始接近含有健康成分的以植物为基础的食品。

Although scientists are still not certain about the specifics, they're beginning to close in on the healthful constituents of plant-based foods.

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