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来源: beautifulwind 于 2021-05-04 08:57:58 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读： 次 (1862 bytes)
Karl von Drais
 
A German baron named Karl von Drais made the first major development when he created a steerable, two-wheeled contraption in 1817. Known by many names, including the “velocipede,” “hobby-horse,” “draisine” and “running machine,” this early invention has made Drais widely acknowledged as the father of the bicycle.

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