To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever-increasing quantities of agricultural chemicals.

为了养活迅速增长的人口，农业必须集约化，这就会不断增加农用化学品的用量。

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With an increasing elderly population in many countries, more people will be at risk of age-related visual impairment.

随着许多国家老龄人口不断增多，与年龄相关的视力损害高危患者也会增多。

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If the population of the earth goes on increasing at its present rate, there will not be enough resources left to sustain life on the planet.

如果地球上的人口继续以现在的速度增长，所剩的资源将不足以维持地球上的生命。

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And although birth rates are dropping in most developing countries, particularly those experiencing rapid economic growth, it will likely be decades before population stops increasing in most of the developing world.

FORBES: The Green Movement's People Problem

"I have every belief that we will ultimately be increasing the barn owl population of Somerset and helping a diversity of other wildlife along the way, " Mr Sperring added.

BBC: Barn owl at a farm

With an increasing elderly population in many countries, more people will be at risk of age-related visual impairment.

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