改变世界的14个伟大发明

摘要

伟大的发明让世界变得更加美好。以下是实实在在改变了世界的14个伟大发明。自行车（1861年） 1861年，皮埃尔·马少克斯发明了自行车。现在全世界有10亿辆自行车，其数量是汽车的两倍。%Great inventions make the world a better place. Here are 14 inventions that really changed the world.Bicycle （1861） The bicycle was invented in 1861 by Pierre Marchaux. There are abillion bicycles nowworldwide, twice as many as automobiles.