自行车简史
e was in 1865, when pedals were applied directly to the front wheel. This machine was known as the velocipede, but was popularly known as the boneshaker, since it was also made entirely of wood, then later with metal tires8), and the combination of these with the cobblestone roads of the day made for an extremely uncomfortable ride. They also became a fad, and indoor riding academies, similar to r
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