生计经济指的是一个社会开发利用它的生存环境以获得供养自己的生活资料。尽管存在很大的变异，一个社会基本上只有两大生机：开发利用野生的抑或家养的植物或动物。
我们正在侵蚀全球经济、生计、粮食安全、健康和生活质量的根本基础。
We are eroding the very foundations of our economies, livelihoods, food security, health and quality of life worldwide.
一个国家的卫生危机可以影响到世界上许多地方的生计和经济。
A health crisis in one country can impact livelihoods and economies in many parts of the world.
该书指出，“出于能源供应安全、经济竞争力、生计改善以及环境可持续性等原因，”能效对三国至关重要。
Energy efficiency is critical in those three countries "for reasons of energy supply security, economic competitiveness, improvement in livelihoods, and environmental sustainability," says the book.
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