A fertility rate of around 2.1 is considered the level a population can replace itself.
1左右的生育率被认为是人口可以自我更新的合适水平.
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Unfortunately , the same cannot be said about measures to raise the fertility rate.
要生育率回升,方法似乎不多.
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The fertility rate, 1.74 in 1980 a bit later in that decade, but has fallen since.
1980年, 该国生育率为1.74,在此后10年间,略有增长, 但之后又降下去了.
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Here , the fertility rate is below 1.5 and countries are struggling in a fertility trap.
这里的出生率低于1.5,这些国家在生育泥潭里面挣扎.
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Their work includes the identification of genes which govern the growth rate and fertility.
他们的工作包括找出那些控制生长率和繁殖能力的基因。
《柯林斯高阶英汉双解学习词典》
By comparison, the fertility rate in developed countries has been stable, or falling.
相比而言, 发达国家的生育率很稳定, 甚至在下降.
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The Changes of Social Mobility Mechanism's Effects on Fertility Rate in Rural
社会流动机制的转变对农村生育率的影响
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当风险厌恶系数较小时，生育率与死亡率是正相关的，经济增长率与死亡概率也是正相关的。
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