population growth

例句：

1. 1. The country'spopulation has been growing steadily since the20th century.
   该国自20世纪以来人口一直在稳步增长。
2. 2. The governmentis working to reduce the rate of populationgrowth.
   政府正在努力降低人口增长率。
3. 3. Theincreasing urbanization is leading to a significantpopulation growth in many developing countries.
   城市化的加剧导致了许多发展中国家的人口显著增长。