来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第12集》

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  but it was interesting,
  但这很有趣
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  the different ways that industry is using to sell food.
  厂商总以不同的方式来促销食物
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  Let's talk about public health.
  我们来讨论下公共卫生
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  Now why am I going to talk about a profession?
  为什么我要来讲一个专业呢
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  Everything else in the class is--or a concept, if you will--
  任何这堂课上其它的东西 或者概念
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  everything else in the class is about substantive material,
  都是实质的物质
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  and this is more about a conceptual approach in a profession,
  但这节课更多的是关于专业概念的研究
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  namely, public health, and what it means.
  这就是公共卫生及其含义
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  Well it's so important here because public health--
  公共卫生十分的重要
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  in the views that public health promotes,
  和我们对待事物的传统方法不同
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  in opposition to the traditional ways we look at things,
  公共卫生提倡的观点
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  are very important in the context of
  在改变饮食和改善人口健康的大背景下