人口统计学家

By 2050, most demographers agree that non-Hispanic white people will be a minority in the overall national population.

大多数人口统计学家一致认为，到2050年，拉美裔以外的白种人将成为美国全国总人口中的少数。

The demographer will coordinate data collection and analysis on human settlements conditions .

这个人口统计学家将会整合这些数据并分析人类的居住条件。

China's unbalanced sex ratio may cause serious consequences as millions of men will be unlikely to find their spouses around 2020, said a Chinese demographer.

中国不平衡的性别比率也许会导致一系列问题，到2020年左右，将可能会有数百万的男性找不到他们的配偶，一位中国人口统计学家说。

"It really raises the question of what should be considered normal ageing," says Kenneth Manton, a demographer from DukeUniversity in North Carolina.

"这真的引起的问题是什么，应该认为是正常的老化，说："丁 manton ，人口统计学家，由杜克大学，在北卡罗来纳州。

Moreover, demographers see the continuing shift south and west as joined by a related but newer phenomenon: More and more, Americans apparently are looking not just for places with more jobs but with fewer people, too.

而且，人口统计学家发现，向南部和向西部的不断迁移还伴随着一种与之相关却又较新的现象：越来越多的美国人显然不再仅仅寻找有更多工作机会的地方，也在寻找人口稀少的地方。

Phenomenon[fi5nCminEn]n.现象 Moreover, demographers see the continuing shift south and west as joined by a related but newer phenomenon: More and more, Americans apparently are looking not just for places with more jobs but with fewer people, too.

而且，人口统计学家发现，向南部和向西部的不断迁移还伴随着一种与之相关却又较新的现象：越来越多的美国人显然不再仅仅寻找有更多工作机会的地方，也在寻找人口稀少的地方。

Demographers say a rate of 2.1 is needed to keep a population from declining.

人口统计学家说生育率为2.1，才能保证人口数量不下降。

Result of falling birth rates. But now for the first time ever, demographers are projecting population

但是，人口统计学家第一次做出预测说，一些国家的人口将由于死亡率的上升而下降，如在博茨瓦

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.

人口统计学家有一个评估：几乎30％的伦敦人口将来会是少数民族，到2010年后她们的后代将会诞生在英国。

Demographers expect the global population to peak at around 10 billion (it is now 6.5 billion) by mid-century.

人口统计学家估计世界人口在本世纪中叶将达到100亿（目前为65亿）。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。