求翻译：Artwork is not the common commodity; it is the subjective expression of artist’s inner experience and the crystallization of talent and inspiration of artist. When the artwork occurs as goods in market, artwork can not be priced in accordance with the theory of labor value. Because of the worth of artwork is not a use-value, but it have the cultural value and artistic value which can meet the aesthetic needs and spiritual pursuits of people. The price of artwork is influenced by the visible and invisible value of artwork (e.g. color, size and aesthetic meaning), the external environment (e.g. period, condition and area), and human factor (e.g. auction, galley and dealers). And I think that human factor plays an important role in art bubble.是什么意思？

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