The study of the characteristics of human populations , such as size , growth , density , distribution , and vital statistics 人口统计学对人口特征，例如数量、增长情况、密度、分布和人口动态统计等进行研究的学科
One demographer has said the 300 millionth person would likely be a latino boy given current u . s . population trends 美国一位人口统计学家曾说，从目前美国的人口走势来看，这第三亿个人可能会是一个拉丁裔男婴。
One demographer * has said the 300 millionth person would most likely be a latino boy given current u . s . population trends 美国一位人口统计学家曾说，从目前美国的人口走势来看，这第三亿个人可能会是一个拉丁裔男婴。
Demographers estimate that almost 30 percent of london ' s population will be ethnic minorities by 2010 ? the majority of whom will be born in the u . k 据人口统计学家估计，到2010年为止将有近30 %的伦敦人口为少数民族，他们其中大部分都是在英国出生的。
As long as they earn their salary , adding more to the economy than they take from it , double - dippers are helping to solve the demographic problem 只要他们在赚取薪水，他们对于经济的付出就大于收入，领取双份收入的人有利于解决人口统计学上的问题。
Two or three years ago demography was often cited : small , densely populated countries were easier to wire up than big , sparsely inhabited ones 两年或者三年前，人口统计学经常被引用来做解释：小的、人口密集的国家比大的、人口分散的国家更容易布线。
One demographer has said the 300 millionth person would likely be a latino boy given current u . s . population trends . others said it could even be an immigrant 美国一位人口统计学家曾说，从目前美国的人口走势来看，这第三亿个人可能会是一个拉丁裔男婴。
Two or three years ago demography was often cited : small , densely populated countries were easier to wire up than big , sparsely inhabited ones 两三年前，人们还常常用“人口稠密的小国比起人口稀疏的大国使用宽带更为容易”这样的人口统计学知识来解释其原因。
Rural counties gained population in the 1990s , a development that surprised demographers who dubbed it the " rural rebound . " this movement continued in 2001 and after 1990年代乡村人口锐增，人口统计学家对此大为惊讶，称之为“乡村反弹” 。这一增长持续至2001年之后。
After adjustment for demographic and lifestyle factors , diagnosed type 2 diabetes was associated with an increased risk of depressive symptoms ( odds ratio = 1 . 69 ) 在进行人口统计学和生活方式因素校正后，确诊的2型糖尿病患者伴随有抑郁症风险增加趋势（优势比= 1 . 69 ） 。
