为什么作者说美国农业部本可以通过制定膳食指南从而在应对气候变化方面做出很大贡献？
Why does the author say the USDA could have contributed a lot to lowering the climate cost through its dietary guidelines?
行动1.1：开发工具、指南、信息和培训包，以支持提高认识和宣传行动，在国家和区域各级保护健康不受气候变化带来的影响。
Action 1.1: Development of tools, guidance, information and training packages to support awareness and advocacy campaigns to protect health from climate change at national and regional levels.
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