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有一队伍长100米,匀速前进,传令兵以匀速从队首运动到队尾然后返回队首,其间队伍前进了100米,问传令兵运动的距离。
A team of 100 meters long, uniform advance, the messenger at uniform speed from the first movement to the tail and then back to the team leader, during which the team advanced 100 meters, asked the distance movement.