求翻译：认识论认为：艺术是自然在人的头脑里的“反映”，是一种意识形态；实践论认为：艺术是人对自然的加工改造，是一种劳动生产，所以艺术有“第二自然”之称。是什么意思？

Epistemology that: Art is a natural in the human mind in the "reflection", is an ideology; Practice that: Art is a human process of natural transformation, is a labor of production, so the art is "second nature" of the said.

epistemology: art that is natural in the minds of human beings, the "reflect" is an ideology; 'People think: art is the processing of natural transformation is a form of labor, production, and that is why art is natural," "2.

The epistemology thought that,Art is the nature “reflects” in human's brains, is one kind of ideology; The On Practice thought that,Art is the human to the natural processing transformation, is one kind of labor production, therefore art has “the second nature” the name.

Epistemological view: art is naturally in the human mind, to "reflect" is an ideology; practical view: art is the processing and transformation of human nature, was a labor and production, so art has "second nature" said.

The epistemology thinks: Art is " reflects " in people's head naturally, it is a kind of ideology; On Practice thinks: Art people to processing transformationing natural, it is one work that produce, so whom art have " second naturally " claim.