剑桥词典a cycling event in which people ride around a track inside a building a number of times . They first all follow a small motor vehicle , and then compete against each other until the end of the race . （场地自行车比赛项目）竞轮 She won the women's keirin at the 2012 Olympics. 她在2012奥运的竞轮项目上获胜。 返回 keirin