The picture of Teotihuacán that emerges is a classic picture of positive feedback among obsidian mining and working, trade, population growth, irrigation, and religious tourism.

展现的特奥蒂瓦坎图景是黑曜石的开采和加工、贸易、人口增长、灌溉和宗教旅游之间良性反馈的经典画面。

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The mainly Sinhala province also has a large population of Indian-origin Tamils working in plantations.

而在大多数僧伽罗省中也有大量在种植园工作的印度泰米尔人。

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Over the next few years, thanks to a combination of a young population and a falling birth rate, Indonesia will see a surge in the ratio of its working population to the number of dependants.

由于印度尼西亚拥有年轻的人口，出生率不断下降，因此未来几年，印度尼西亚的劳动人口将远远超过受赡养的人口。

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The U.N.Fund for Population Activity and the World Health Organization are working with national ministries of health in a global campaign to end fistula that now covers more than 40 countries in Sub-Saharan Africa, Asia,and the Middle East.

VOA: standard.2009.12.23

And this is a conservative response to the mobilization of French workers, and this says the working class population won't at all listen to bad advice.

这是对于,法国工人运动的一个保守回应,这意思是,工人阶级,不会听从不合理的建议

耶鲁公开课 - 1871年后的法国课程节选

Canary Wharf Group PLC, which benefits from a working population of 100, 000 in London's second financial center, has a 100% occupancy for its shops and has found tenants for all the stores vacated by failed retailers, except for one, which is currently under offer, the company said.

WSJ: U.K. Retail Rents Drop as Stores Close

It means our putative 24-year-old faces a future of a small working population supporting a large number of elderly people.

BBC: Have young people never had it so bad?

Mr McNulty was interviewed after a Newsnight investigation discovered there were 3, 000 Polish immigrants living in Crewe, which has a total working population of about 60, 000.

BBC: NEWS | UK | UK had 'no idea' over EU migrants