但几乎肯定的是，蜂群的生存压力有其更深层次的原因——营养不良。

But there is almost certainly a further factor causing stress on the bees-a poor diet.

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第一层次的方法指导第二、第三层次的方法，同时又从这些方法中汲取方法要素的营养，丰富自己；

The methods of the first level give guidance to those of the second and third level, and in turn draw in nutrients to enrich themselves.

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实验室模型的进一步研究计划提供线索和对现在干预更深层次的理解，如锻炼和营养良好，也许会促进健康长寿。

Further research in laboratory models is expected to provide clues and deeper understanding of how existing interventions, such as exercise and good nutrition, may lead to lifelong well-being.

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