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1998年,飞行器设计师Paul MacCready面对一个人类全面统治自然的星球,讨论我们可以做些什么来维持自然的平衡。他的贡献:太阳能飞机,超高效滑翔机和电动汽车。
Paul MacCready, an aircraft designer and environmentalist, is a pioneer of human-powered flight, alternative energy for transportation, and environmentally responsible design. Full bio »
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