The model of fuel supplies supplemented by replenishable reserves is common not just in biological systems but also in economic and social ones.
以燃料供应为主，以可再生储备为辅这种模式在生物系统内很普遍，在经济和社会系统里也不罕见。
The model of fuel supplies supplemented by replenishable reserves is common not just in biological systems but also in economic and social ones.
以燃料供应为主，以可再生储备为辅这种模式在生物系统内很普遍，在经济和社会系统里也不罕见。
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