1·Natural soil fertility is dropping in many areas because of continuous industrial fertiliser and pesticide use, while the growth of algae is increasing in lakes because of the fertiliser run-off.
在很多地区，由于工业化肥和农药的持续使用，导致自然土壤的肥力正在下降，然而化肥的流入却导致湖泊中藻类生长得越来越快。
2·Crop rotation is a simple and effective technique used in organic agriculture to reduce the need for pesticides and improve soil fertility.
轮作是应用于有机农业上的一种简单而有效的技术，能减少农药的使用和提高土壤肥力。
3·As importantly, biochar improves fertility in a wide variety of tropical soils. Beneficial micro-organisms seem to crowd into the pores of the small pieces of crushed charcoal.
同样重要的是，由于有益微生物似乎会聚集到小块木炭碎料的孔洞中，“生物碳”还可以改善各种热带土壤的肥力。
4·Bed planting improves soil fertility and structure and helps reduce erosion, water usage, herbicide use and facilitates mechanical and manual weeding.
垄播改善了土壤肥力和结构，对减少流失、水的利用和除草剂的施用也有帮助，也方便了机械和人工除草。
5·The best bit, according to Rademakers, is that adding the 'char' to poor soil dramatically increases its fertility, so the world could kill two birds with one stone.
最棒的一点是，Rademakers说，如果将得到的“生物炭”加入到贫瘠的土壤中可以大幅度地提高它的肥力，这对全世界真是一石二鸟。
1·By some studies, the safety nets for retirees have reduced fertility rates.
一些研究表明，退休人员的社会保障体系使生育率降低了。
2·To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
为了做出更准确的人口预测，人口统计学家必须比现在更多地了解生育率的社会和经济决定因素。
3·With its fertility artificially suppressed by the one-child policy, it is ageing at an unprecedented rate.
由于其生育率被独生子女政策人为地压低，它的老化速度也是史无前例的。
4·The link between living standards and fertility exists within countries, too.
国家内部的生活水平和生育率也存在联系。
5·The odd ones out are America and Britain, which both have lots of women at work and fertility rates close to replacement level (with immigration making up the rest).
美国和英国则是例外，它们都有大量工作妇女，且生育率接近替代水平（不足部分有移民补充）。
1·Rather, they should face a “slope of death” that rises as their fertility falls.
不如说，在他们生育力减退时面对的是“死亡斜坡”。
2·The other, surprising Europe is a place of recovering fertility and rising population.
另一部分，令人惊讶的欧洲是恢复生育力和人口增加的地区。
3·Whether this test will actually encourage a shift in the way men view their role in fertility testing, only time will tell, she says.
她说，这一测试到底会不会改变男性对自身在生育力检查中角色的成见，或许只有时间才会给出最好的回答。
4·Dr Marina Singh is sent into the Amazon to investigate the progress of a fertility study that her mentor from medical school, Dr Annick Swenson, is conducting in secret.
玛丽娜·辛格博士被派往亚马逊调查一项生育力研究的进展状况。该项研究由他在医学院的导师安妮克·斯文森博士秘密进行。
5·Soon after, she started noticing fertility ads on sites she visited.
随即，她开始留意到生育力广告在其访问的站点上显现。