Now a development economist--that's Santosh's field-- Development economics is a very important field in economics that is helping less developed countries emerge.

发展经济学...那是桑托什的研究领域,发展经济学是,经济学中一个非常重要的领域,它研究的是如何帮助欠发达地区实现经济崛起

耶鲁公开课 - 金融市场课程节选

In India this is across regions some regions are being left behind others are moving ahead.

在印度，地区之间也存在这个问题,有些地区很落后,有些地区经济却很发达。

普林斯顿公开课 - 国际座谈会课程节选