censuses
A census is an official survey of the population of a country that is carried out in order to find out how many people live there and to obtain details of such things as people's ages and jobs.
The detailed assessment of the latest census will be ready in three months.
有关最新人口普查的详细评估工作将在3个月内就绪。
Population censuses in India show that the number of girls has been falling steadily for the past 20 years relative to the number of boys.
印度的人口普查显示在过去的20年里,相对于男孩的数量,女孩的数量正稳步下降。
In the new study, Kaplan studied census data collected between 2007 and 2009.
在新的研究中,卡普兰研究了2007年至2009年收集的人口普查数据。