population information system

例句：

1. 1. The population information system is crucial for monitoring the growth of the city's population.
   人口信息系统对于监测城市人口增长至关重要。
2. 2. The government has launched a new population information system to improve its efficiency.
   政府推出了一个新的人口信息系统，以提高其效率。
3. 3.The population information system helps us track the movement of people across the country.
   人口信息系统帮助我们追踪全国范围内人们的位置变动。