社会生产有两种,一种是物质生产,其成果体现为粮食、蔬菜、汽车、飞机等物质产品;一种是精神生产,其成果体现为思想理论、学术著作、文艺作品。显然,生产力也有两种,一种是物质生产力,一种是精神生产力。 There are two kinds of social production, one is the material production, and its achievement is embodied in the material products such as food, vegetables, automobiles and airplanes; the other is the spiritual production, whose achievements are embodied in ideological theory, academic works and literary works. Obviously, there are also two types of productivity, one is material productivity and the other is spiritual productivity.