Unfortunately, rich countries possess most of this knowledge, while developing countries do not.

不幸的是，发达国家掌握了这方面的大部分知识，而发展中国家则没有。

youdao

People in developing countries are happier than before while people in developed countries are no happier than they used to be. Why? What lesson can you learn from it?

话题好像是问为什么在已开发的富国人民不如以前快乐，而相对的，在开发中的人民却是比以前快乐?又问从这种情形学得什么教训?。

youdao

While people in other countries in the world were trying to catch wild animals and birds and were still collecting seeds and nuts, farmers in China were developing the science of agriculture.

当别的国家的人们还在努力捕猎禽兽、采集果实时，中国的农民就已经在从事农业研究了。

youdao

Also, while developing countries are training more researchers and scientists, this does not necessarily mean that they will easily find jobs in the country of origin, feeding a South-North and North-North migration of graduates.

UNESCO: MEDIA SERVICES

Trade policy is a key instrument to ensure the spread of green technology to developing countries while also promoting growth and jobs in Europe.

FORBES: Setting The Agenda For Global Green Growth Forum 2012

The redoubled effort called for in this report will help reduce dependence on imported oil and spur economic growth in developing countries while minimizing emissions of greenhouse gases.

WHITEHOUSE: THE WHITE HOUSE