The ancestor of the modern bicycle was called a penny-farthing.
现代自行车的原型称作penny-farthing（一种前轮大后轮小的自行车）。
《牛津词典》
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With 13,600 Km already covered on his 19th century "pennyfarthing" bicycle, a 39-year-old Briton has embarked on one of the toughest 2 legs of his world 3 trek-china.