1·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。
2·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。
3·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。
4·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。
5·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。
6·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。
7·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？
8·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。
9·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。
10·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。