The main research tools: the analysis of PEST external factors, Michael Porter 's Five factors Model, Life cycle analyses, and SWOT matrix.
主要分析方法：PEST外部因素分析法、波特五种力量模型、生命周期分析法、SWOT矩阵分析法。
Not only do life cycle analyses offer genuine opportunities for environmentally efficient food production, but they also address several problems inherent in the eat-local philosophy.
不仅仅因为完整生命周期分析更真实地反映食物生产的环保效率，而且它指出了几个吃在本地哲学的内在问题。
Academic “life-cycle analyses” go into painstaking detail, factoring in the emissions associated with building factories in which food is produced, for example.
学术“生活周期分析”对此进行了详细的研究分析，极其艰苦地花费了大量的精力时间，比如说分析研究了生产食品的制造工厂与二氧化碳排放量之间的联系。
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