Marriage squeeze becomes one of the hot issues in population transition of China.
婚姻拥挤问题是中国人口转变过程中面临的热点问题之一。
The population transition in European countries can date from the 18th to19 ~ (th) century.
欧洲国家人口转变的历史可以追溯到18 - 19世纪。
The criterion of the complete population transition should be the turning point in the course of mortality ascendant .
人口转变完成的标准应该是死亡率上升时所出现的拐点。
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