结论2：培育产业集群是地区初级工业化的有效方式。
Conclusion 2: Promoting industry clusters is a valid way to the entry-level to industrialization of a region.
但是以初级工业为主的国家，比如说矿业和林业，却倾向于排放更多的温室气体。
But countries with significant primary industries, such as mining or forestry, tend to emit far greater quantities of greenhouse gases.
如果我们是处于前工业化的初级农业社会，极端的气候变化将会是灾难性的。
If ours were a preindustrial, primarily agricultural society, extreme climate change would be obviously catastrophic.
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