To return from the present textbook definition to that of Marx, the object of economics or political economics should be the production mode and the correspondent production and exchange relations.

• 应当从现今教科书的定义复归到马克思的定义上去，经济学或者政治经济学的研究对象应该是生产方式以及和它相适应的生产关系和交换关系。