By the mid-19th century most of Europe was in the first stage of the demographic transition.
到19世纪中叶，欧洲的大部分地区处于人口转变的第一阶段。
Peng Xizhe. 1991. Demographic Transition in China. Oxford: Clarendon Press.
田雪原.1991。田雪原文集。 北京：中国经济出版社。
InEurope and North America this demographic transition began in earnest around 1870.
在欧洲和北美这个人口过渡开始于1870年左右。
One way round this is to look at records gathered before the demographic transition began.
研究这个问题的方法之一是查阅“人口转变”开始之前收集的记录。
In the worst cases, civil war has meant that the demographic transition has not even begun.
在最糟糕的情况下，内战意味着人口转型压根没有开始。
Demographic transition is one of the vital factors challenging the sustainable economic growth in China.
人口转变是挑战中国经济持续增长的一个重要因素。
Why this change has come about, and why the demographic transition happens in the first place, are matters of debate.
为何出现这种转变，以及为何首先出现了人口过渡？
The Role of English in the 21st Century The world is in various stages of social, economic, and demographic transition.
英语在21世纪的角色世界在社会、经济、和人口统计学转变的各种不同阶段中。
As census results from the world's two most populous countries pour in, the China India demographic transition debate rages on.
随着中印这两个全球人口最多的国家公布人口调查结果，两国的人口状况变迁问题得到热议。
China became the risky society in terms of demographic transition since 1996, and will develop into serious risky society since 2016.
1996年，中国成为人口转变意义上的风险社会，2016年后将演变为高风险社会。
To assess the effects of the demographic transition, the two researchers split the sample into women born before 1870 and those born in or after it.
为了评估人口过渡的影响，这两名研究员分头对在1870年前和在这时及之后进行生产的妇女进行取样。
Poor countries are racing through the same demographic transition as rich ones, starting at an earlier stage of development and moving more quickly.
穷国正飞速经历富国曾经走过的人口结构转型历程。而且，它们开始得更早，进行得更快。
Africa, exceptional in so many ways, does not seem to be an exception to the rule that, as countries get richer, they experience a demographic transition.
尽管非洲在很多方面与众不同，但它似乎并没有逃脱这样一条铁律：随着国家越来越富有，它们就会开始经历人口转型。
Yet Africa is also starting out, a little late, on a demographic transition that others have already traced: as people get richer, they have fewer children.
但是非洲已经开始——尽管有些晚——其他地方已经经历过的人口转型：当人们越来越富有，他们的孩子就越少。
The strong relationship between kinship and fertility was so unexpected that the researchers have not yet calculated exactly how much it contributes to the demographic transition.
血缘和生育之间牢固的关系如此神秘莫测，这使得研究者目前还无法准确计算出这一关系对人口结构转化的影响。
As one of the consequences of the rapid demographic transition in China, the accelerating process of population aging is changing the relationship between labor supply and labor demand in urban China.
人口加速老龄化是中国人口快速转变的代价之一，城镇劳动供求形势也将因此出现重要变化。
The findings address the process and consequences of change in rural family and marriage customs during the current demographic and social transition, and suggest new approaches to maintaining lo…
研究结果有助于理解农村人口在社会转型中婚姻与生育的变化过程和后果，为在农村稳定低生育率提供新的思路和途径。
The findings address the process and consequences of change in rural family and marriage customs during the current demographic and social transition, and suggest new approaches to maintaining lo…
研究结果有助于理解农村人口在社会转型中婚姻与生育的变化过程和后果，为在农村稳定低生育率提供新的思路和途径。
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