Tax penalties for those who have families with more than a designated number of children to discourage excesspopulation growth.
对子女超过法定数目的家庭给予税收惩罚以抑制人口的过度增长。
2
Agriculture provided a more dependable source of food, causing populations to increase; eventually excesspopulation migrated to new lands.
农业提供了更加可依赖的粮食来源，使人口增长；最终过多的人口迁移到新的土地。
3
They use statistical models designed to calculate so-called excess mortality that occurs during the period when influenza viruses are circulating widely in a given population.