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。

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This suggested that the soil microbe number and bio-fertility were increased with the increase of plantation time.

也就是说随着造林时间的延长，林地土壤微生物总量和土壤生物肥力有提高的趋势。

youdao

At the same time, the fertility rate (the number of children an average woman will have in a lifetime) is now 1.39, well below the replacement level.

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If the high-fertility nations were to see dramatic declines in Total Fertility Rates (TFRs, the number of children per woman during her reproductive life-time) we would need to see drastic cuts in reproductive rates in at least 40% of all nations and that would have to start today.

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