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自行車運動項目 Cycling
Bicycles were first developed in the mid-18th century and have long since been used as a form of transport. Originally, the front wheel was much larger than the rear wheel, and the rider was elevated a great deal, making them difficult to control and very dangerous. In 1885, J.K. Starley of England devised the more modern bike with a chain and gearing to allow the wheels to be of equal size. Although bicycle races had been held on the old "penny farthings", the new bikes stimulated the growth of bicycle racing as a sport.
從18世紀中期問世以來，自行車一直是一種廣泛使用的交通工具。早期自行車的前輪比后輪大很多，而且車座也很高，使得騎車人很難控制車子。這種情況是相當危險的。1885年，英國的斯塔利（J.K. Starley）使用滾珠軸承及鏈條設計出了前、后車輪大小一樣的現(xiàn)代自行車。雖然在此以前已經(jīng)有使用老式4：1式自行車的（前輪尺寸是后輪的4倍）自行車賽，但現(xiàn)代自行車的出現(xiàn)刺激了自行車賽向競技體育方面發(fā)展。
Cycling at the Olympics features three exciting disciplines: road, track and mountain biking.
如今，奧運會自行車比賽分為公路賽、場地賽及山地賽三種。
About Cycling（Olympic sport since 1896）
自行車概述（1896年成為奧運會正式比賽項目）
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