As the gladiators rolled away from the starting gates, a gasp went up when the Scottish cyclist's left foot clicked out of the pedal.矫健的自行车手们纷纷骑车冲出起跑门，突然苏格兰选手的左脚咔嗒一声踩空了踏板，观众不禁倒抽了一口冷气。The horses began entering the starting gate.赛马开始进入起跑门。The horses exploded out of the starting gate.那些马匹一下子冲出起跑门。