以下为句子列表：
英文: Althouther the problem is not as serious as Han, the tendency is the same; There is the region differences the ethnic differences and the difference between the city and countryside in the sex ratio of the problem.
中文: 虽然问题没有汉族严重，但其发展的趋势与汉族相当接近；少数民族出生人口性别比偏高表现出较强的区域差异、城乡差异和民族差异。
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英文: Applying the statistical analysis of demographic sociology, this paper focuses on the relationship between the sex ratio at birth for the Han and the marriage migration of female minorities in China.
中文: 摘要应用人口社会学的统计分析方法，讨论了我国汉族人口的出生性别比与少数民族妇女从边疆迁徒到内地省区之间的关系。
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英文: Because of the special historical condition and political and military reason in the period of the World War Ⅱ, the male death rate between twenty and fifty of Russia is very high, the unbalance of people's sex ratio in this country was serious from then
中文: 摘要由于二战时期特殊的历史条件和政治军事原因，俄罗斯的青壮年男性死亡率很高，从此开了该国人口性别比严重失调的先河；时至今日，俄罗斯的经济发展缓慢，加之地理环境、生育观念和生活习惯等因素的影响，更使得人口性别比失调现象日益产重。
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英文: Cities in which the sex ratio is high had few female-headed households, whereas the opposite was true of cities with low ratios.
中文: 在性别比例高的城市里，单亲妈妈家庭只是少数；但在性别比例低的城市中则情形相反。
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英文: Critics say the policy has led to forced abortions and a dangerously imbalanced sex ratio due to a traditional preference for male heirs, which has prompted countless families to abort female fetuses in hopes of getting boys.
中文: 批评人士认为，计划生育政策使很多具有“重男轻女”传统思想的家庭进行了选择性人工堕胎，由此造成了我国男女比例的严重失调。
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