Another finding was that fertility rates have declined in those parts of morocco and turkey that export labour to europe 报告的另一项发现是，在摩洛哥和土耳其向欧洲输出劳动力的地区，生育率有所下降。
Rural fertility rates are believed to be higher than china ' s statistics show , since many children are concealed from census takers 农村生育率肯定比中国的统计数字要高，因为在人口普查中很多孩子被隐瞒了。
Japan ' s fertility rate - the average number of children a woman bears in her time - fell to an all - time low of 1 . 25 last year 去年，日本的生育率一个妇女一生中所生孩子的平均数量下降至历史最低点，只有1 . 25 。
Coupled with the low fertility rate , sustainability of the current long - term care financing arrangement will become a critical concern 在经济低迷的情况下，此现象只会日趋严重，长者被迫提早退休的情况亦屡见不鲜。
Coupled with the low fertility rate , sustainability of the current long - term care financing arrangement will become a critical concern 在经济低迷的情况下，此现象只会日趋严重，长者被迫提早退休的情况亦屡见不鲜。
The low fertility rate in many of that continent ' s more developed countries means their populations are ageing and shrinking 欧洲大陆的许多发达国家出现了过低的生育率，而这意味着这些国家的人口正在面临老龄化与减少。
Japan ' s fertility rate - - the average number of children a woman bears in her lifetime - - fell to an all - time low of 1 . 25 last year 去年，日本的生育率（一个妇女一生中所生孩子的平均数量）下降至历史最低点，只有1 . 25 。
In short , a move to lower fertility rates will mean healthier children , much faster growth in living standards and reduced environmental stressors 简而言之，降低生育率意味著较健康的儿童，快速改善生活水准，并减少对环境的冲击。
Effects of the first polar body ' s position and morphology in murine oocyte on fertility rate and fertilized egg quality in intracytoplasmic sperm injection 卵胞浆内单精子注射中小鼠卵细胞第一极体位置和形态对受精率和受精卵质量的影响
Because there is no routine method which can apply mechanically , survival rate , fertility rate , net migration rate in the future is difficult forecasted 由于没有墨守成规的方法可以套用，因此这也成为应用队列要素法进行人口预测的难点之一。
