国际田联明确界定，比赛项目最后冲刺的"有效部位"是运动员的躯干下方。
运动员们在赛场上展现出了惊人的竞技水平。
谁先于躯干撞线，谁就失去了本应获得冠军的机会。
athlete's head or foot, if they arrive before the body in the chest, is not a valid position for finishing.
athletes must aim precisely at the finish line, either by lying on their back or standing upright, as side-to-side or using their shoulders to hit the finish line is not counted.
运动员们在赛场上展现出了惊人的竞技水平。
谁先于躯干撞线，谁就失去了本应获得冠军的机会。
athlete's head or foot, if they arrive before the body in the chest, is not a valid position for finishing.
athletes must aim precisely at the finish line, either by lying on their back or standing upright, as side-to-side or using their shoulders to hit the finish line is not counted.
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