名词
中文翻译：起始点
同义词：
['beginning point', 'starting point']
例句：
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1.The starting bar is the first step in the race.
起始点是比赛中的第一步。
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2.The starting bar was set at a distance of 50 meters from the finish line.
起跑线距离终点线50米。
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3.The starting bar was used to measure the distance between the two points.
起跑线用于测量两个点之间的距离。