The average citizen in the developed world uses over 155kg of paper per year.

发达国家中普通公民每年的用纸量超过155公斤。

《牛津词典》

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"We need both the developed world and the developing countries to come together and to give and support a global initiative in the war against hunger."

VOA: special.2009.11.23

And there are many reasons for this, our success in eliminating infectious diseases as causes in the developed world.

还有很多原因,在发达国家我们成功地消灭了感染性疾病

耶鲁公开课 - 生物医学工程探索课程节选

I do think that to the extent that the developed world can help the developing world

在这方面，我认为发达国家在某种程度上能帮助发展中国家

全球变暖与国力 - SpeakingMax英语口语达人

Post-Copenhagen greens need to reassess their relations with people in the developed countries as well.

FORBES: The Green Movement's People Problem

Gout has been on the increase in the developed world for the past 30 years.

BBC: NEWS | Health | Alcohol does increase gout risk

In many ways countries like Kenya are leading the developed world in this area.

FORBES: Let's Finally Get the Fundamentals of Healthcare in Place in Africa