这次人口普查不同于以前的人口流动研究是因为。
The census distinguished itself from previous studies on population movement in that.
以前，要养活世界最多的人口是很困难的。
It was difficult to feed the largest population in the past.
人类为了养活比以前更多的人口，需要获得可耕地，因此大量砍伐树木。
To feed the larger population, humans need to obtain arable land, so there is a massive clearing of trees.
一世纪以前，一个社区常常可以占有该城市40%的人口，而现在，那些生活业慢慢褪色，变为记忆。
A community which a century ago made up almost 40% of the city's population now lives chiefly in fading memories.
非本国出生的人口在很多西方国家急剧增加，比例超过10%：包括以前的移民输出国希腊和爱尔兰。
The proportion of foreign-born people in many Western countries has surged well above 10%: this includes Greece and Ireland, from where emigrants used to leave.
陶罐过滤器进村以前，百分之80的人口患有严重腹泻。
Before the clay filters were introduced to the village, 80 percent of its population was suffering from severe diarrhea.
在美国，据估计有30到40个百分点的人口已在10岁以前就感染了幽门螺杆菌。
In the United States, it is estimated that 30 percent to 40 percent of the population is infected, acquiring the infection before age 10.
在二十世纪以前，没有人经历过人口总数成倍的增长，但是如今有活着的人看到了三倍的人口增长。
Before the 20th century, no human had lived through adoubling of the human population, but there are people alive today who haveseen it triple.
危机以基伍北部为中心，该地的人口超过500万人，包括因最近的紧急情况和以前的长期战争而流离失所的150万人。
The crisis is centred on North Kivu, which has a population of more than 5 million people, including 1.5 million people displaced by the latest emergency and previous long-running hostilities.
事实上，汉语在全世界比以前更受欢迎了，说汉语的人口数量正在上升。
Indeed, Chinese is more popular around the world than before, and the population speaking Chinese is on the rise.
实际上，上海以前总有一个相对年轻的人口结构，现在已经与美国或欧洲多数城市一样，具有相同比例的退休人口。
Indeed, Shanghai, which has always had a relatively youthful populace, now has the same proportion of retirees as an average city in the United States or Europe.
治疗和人口的增长意味着比以前有更多的人与艾滋病人生活在一起。
Treatments and population growth mean more people than ever are living with HIV.
第一，在1930年以前过世的人，一生中从未发生过全球人口倍增的情事。
First, no person who died before 1930 had lived through a doubling of the human population.
注：2002年以后的人均拥有指标按城镇全社会人口计算。以前按非农业人口计算。
Note: Per Capita Ownership is calculated on the total population in cities for the year 2002. Prior to 2002, it was based on non-agricultural population.
现今的人会比以前活的时间更长，现在年龄超过60的人口是739百万，预计到2050年这个数字会变成20亿。
In a changing world people are living longer than ever, with the number aged 60 + expected to grow from 739 million today to 2 billion by 2050.
NHANES的不同于以前的估计，包括分散在全国各地的城市，所有种族和年龄的男性和女性，所以它的思想统计学模仿美国的人口。
Unlike previous estimates, NHANES includes men and women of all RACES and ages, from cities scattered across the country, so it's thought to statistically mimic the population of the Untied States.
从区域上看，洛基山脉各州上报了自1970年以来最高的人口增长率——37.1%，而以前这片广阔的土地上的人口仅占美国总人口的5%。
Regionally, the Rocky Mountain states reported the most rapid growth rate - 37.1 percent since 1970 in a vast area with only 5 percent of the US population.
从区域上看，洛基山脉各州上报了自1970年以来最高的人口增长率——37.1%，而以前这片广阔的土地上的人口仅占美国总人口的5%。
Regionally, the Rocky Mountain states reported the most rapid growth rate - 37.1 percent since 1970 in a vast area with only 5 percent of the US population.
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