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在经济学领域中,凡做出过开创性贡献的的经济学家大都是在30岁左右就开始了这一开创性的研究工作,经济学理论的创新和发展主要是由年轻的经济学家完成,而
In the field of economics, economists who have made pioneering contributions mostly started this groundbreaking research work by the age of 30. The innovation and development of economic theory are mainly conducted by young economists Complete, however