Population growth is typically very slow in this stage, because the society is constrained by the available food supply; therefore, unless the society develops new technologies to increase food production (e.g. discovers new sources of food or achieves higher crop yields), any fluctuations in birth rates are soon matched by death rates.
在这一阶段，人口增长通常非常缓慢，因为社会受到粮食供应的限制; 因此，除非社会开发新技术来增加粮食生产(例如发现新的粮食来源或实现更高的作物产量) ，否则出生率的任何波动很快就会与死亡率相匹配。