a steady increase in population

• 人口不断增加

a steady increase in population的用法和样例：

例句

1. The greatest pressure on China's agriculture, particularly grain production, is the continuous growth of the population and incessant shrinkage of the cultivated land.
   中国的农业，特别是粮食生产面临最大的压力，就是人口不断增加，耕地不断减少。