接近300名经济学者联名签署一封建议信，敦促AEA作为该学科最权威的职业协会，接受通过这样一组职业道德守则。
Close to 300 economists have signed a letter urging the AEA, as the discipline's foremost professional body, to adopt such a code.
中世纪西欧农奴制是西欧封建社会的一种经济形态，与自给自足的庄园经济相适应。
The Western European serfdom is one kind of economic forms in Western European feudal society, and it was suitable for the self-sufficient manorial economy.
盛唐时期是我国封建社会经济繁荣，文化辉煌的历史阶段。
The flourishing period of the Tang Dynasty is a historic period in China's feudal society, which created prosperous economy and magnificent civilization.
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