The ancestor of the modern bicycle is called a penny farthing 现代自行车的原型叫做‘前轮大轮小的自行车’ 。
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The ancestor of the modern bicycle was called a penny farthing 现代自行车的原型叫做‘前轮大轮小的自行车’
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Although bicycle races had been held on the old " penny farthings " , the new bikes stimulated the growth of bicycle racing as a sport . cycling at the olympics features three exciting disciplines : road , track and mountain biking 虽然在此以前已经有使用老式4 ： 1式自行车的前轮尺寸是后轮的4倍自行车赛，但现代自行车的出现刺激了自行车赛向竞技体育方面发展。
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