And in fact growing worldwide for that reason." Harry Atwater's description of his new design for solar cells is published in the journal Nature Materials.

VOA: standard.2010.02.19

Nature supplies the standards, the materials, the models, for all the later arts, the city being by nature, man by nature, nature provides the standard.

自然提供了标准，物质，模型，为后来产生的艺术，为城市，为人类的存在，是自然提供了一切标准。

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