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For example, when the Wright brothers first flew in 1903, all the mechanics and theories necessary — from the piston engine to wing aerodynamics — already existed. The Wrights just had to push the technology a bit further by putting the right parts together and adding some key insights of their own.。业内人士推荐体育直播作为进阶阅读
This story was originally featured on Fortune.com，这一点在WPS官方版本下载中也有详细论述
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