China has been stressing the importance of its ties with third world countries.

中国一贯强调与第三世界国家联系的重要。

《柯林斯英汉双解大词典》

If big sums are to be spent on cleaning up environmental disasters, it is better to spend them on unglamorous but pressing problems such as unsanitary water in Third World countries.

如果要把大笔资金花在清理环境灾难上，那么最好把钱花在那些乏味但紧迫的问题上，比如处理第三世界国家不卫生的水的问题上。

youdao

China believes that there are rights and wrongs involved in the disputes between third world countries.

中国认为第三世界国家的分歧是有是有非，有曲有直的。

《新英汉大辞典》

He agrees with Fisher that the tradition of non profits in developed countries giving tools and equipment to poor people in third world countries -- is a poor model.

VOA: standard.2010.08.09

Is the probably illiteracy confined to third-world developing countries?

是否文盲只在,第三世界的发展中国家存在呢？

麻省理工公开课 - 媒体、教育、市场课程节选

The soap is cleaned and reformed into new blocks, then sent to people in Haiti and other third-world countries.

BBC: Business travel gives back

From engine overhauls, to drilling out rivets to fixing faulty flaps, Boeing and Airbus-made passenger jet repairs are increasingly being done in third-world countries.

FORBES: JetBlue Good For A Climb To $7

With small domestic markets, backward technology and inadequate capital, third-world countries have everything to gain from ending their relative isolation and developing close economic ties with the rest of the world.

ECONOMIST: The future of the state