Lorenz和Rahut的试验适合大规模、混乱的现实世界，也适合理论研究。
Lorenz and Rahut's experiment fits between large-scale, real-world messiness and theoretical investigation.
我们绝不反对小规模，低产出的农业系统，但设想用这样一个模式来养活世界不断增长的人口未免不够现实和真诚。
We have nothing against small scale, low output, farming systems but to suppose this is a model which will feed the world's growing population is disingenuous.
这种严峻的现实不只发生在乡村的几百万农民身上，它也降临到世界上许多大都市的居民头上，他们巨大的人口规模让他们不得不开采地下水以满足饮用水需求。
This is serious for millions of people not just in the country but also in many of the world's biggest cities, which often depend on aquifers for their drinking water.
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