人口学家估计，到2050年，将有四分之三的人类居住在城市，其中大部分将来自亚洲和非洲快速发展的城镇。
Demographers reckon that three quarters of humanity could be city dwelling by 2050, with most of the increase coming in the fast growing towns of Asia and Africa.
因为这一部分人口一直以来都被人口学家忽略。
Because this is a demographic that has traditionally been overlooked by demographers.
人口学家或许在人口预测上最为知名。
Demographors are perhaps best known for making population projections.
美国的人口学家乐于指出中国人口也正逐渐老龄化。
Demographers in America enjoy pointing out that China also will become an aging society over time.
人口学家曾预言，孟菲斯将成为全国第一个以黑人为主的都市地区。
Demographers forecast that Memphis will soon become the nation's first majority black metropolitan region.
地球人人口太多不再是人口学家最大的担心；他们现在反过来担心人口太少。
Having too many people onthe planet is no longer demographers' chief worry; now, having too few is.
人口迁移的选择性一直以来都是人口学家和经济学家关注的焦点。
Selectivity of human migration has long been the focus of demographers and economists.
人口迁移的选择性一直以来都是人口学家和经济学家关注的焦点。
Selectivity of human migration long been the focus of demographers and economists.
对中国人口学家们来说，最大的担心是这个人口发展趋势对社会、经济的影响。
Of greater concern to Chinese demographers are the social and economic effects of these trends.
不过，人口学家们指出，“单身”趋势将对美国的公共机构产生深远的影响。
Demographers, however, point out that the 'single "trend will have a profound effect on American institutions."
人口学家已经注意到：当富裕国家的人口变老时，大多数新兴国家的人口仍然非常年轻。
Demographers have often noted that most of the emerging world will stay young while the rich world ages.
社会学家和人口学家发现，有至少一个儿子的夫妇比那些只有女儿的家庭面对的离婚风险要小得多。
Sociologists and demographers have discovered that couples who have at least one son face significantly less risk of divorce than couples who have only daughters.
今年，在世界人居日所在的这个月，据人口学家预言，将诞生我们星球上第70亿个居民。
This year, World Habitat Day falls during the month when demographers predict our planet's seven billionth inhabitant will be born.
这个结论可能会令社会学家和人口学家震惊，因为人们一直认为东亚人群中重男轻女倾向普遍。
This may appear shocking to sociologists and demographers since it has been long believed that preference for sons over daughters prevails in populations of East Asia.
社会学家和人口学家发现，有至少一个儿子的夫妇比那些只有女儿的家庭面对的离婚风险要小得多。为什么？
Sociologists and demographers have discovered that couples who have at least one son face significantly less risk of divorce than couples who have only daughters. Why is this?
在维希，人口学家互相转告，在像英格兰和威尔士这些国家，他们对将有多少老人和他们能活多久的估计应向上调整。
At Vichy the demographers were telling each other that their estimates of how many old there would be and how long they will live in countries like England and Wales are due for revision upwards.
虽然人口学家承认中国十二生肖文化的重要性，有些人还是向这种文化泼来了冷水，因为他们认为这种文化影响了全国人口的出生率。
While demographers acknowledge the Chinese zodiac's cultural importance, some have thrown cold water on the idea that it affects birthrates on a national scale.
沃尔玛说，到2025年，公司将以更低的成本实现更高的销售额。有人口学家预测，到2025年，中国人口过百万的快速增长的中型城市数量将超过200个。
By 2025, when demographers predict more than 200 such Chinese cities will have populations exceeding one million, Wal-Mart said it will generate higher sales on lower costs.
在中印双方的初步数据都统计出来后，人口普查局的人口学家丹尼尔•古德坎（DanielGoodkind）在e-mail中写道，这些预测“相当准确”。
Now that preliminary results from both the Indian and Chinese censuses have come out, Census Bureau demographer Daniel Goodkind wrote in ane-mail, those projections "hold up fairly well."
在维希参加会议的人口学家都相互告知，他们对象英格兰和威尔士这样的国家有多少老龄人口，这些人口有多长的寿命所做的估计，已经到了该把数目往上调整的时候了。
At Vichy the demographers were telling each other that their estimates of how many old there would be and how long they will live in countries like England and Wales are due for revision upward.
皮尤西班牙裔研究中心(Pew Hispanic Centre)的人口学家杰弗里•帕赛尔(JeffreyPassel)预计2007至2008年间美国非法移民的数量下降了50万人。
Jeffrey Passel, a demographer at the Pew Hispanic Centre, estimates that the number of illegal immigrants in America fell by 500,000 between 2007 and 2008.
皮尤西班牙裔研究中心(Pew Hispanic Centre)的人口学家杰弗里•帕赛尔(JeffreyPassel)预计2007至2008年间美国非法移民的数量下降了50万人。
Jeffrey Passel, a demographer at the Pew Hispanic Centre, estimates that the number of illegal immigrants in America fell by 500,000 between 2007 and 2008.
应用推荐