当朴泰桓手触游泳池壁时，菲尔普斯已经在抬头查看上方的计时版了。
The South Korean touched the wall while Phelps was already looking at the overhead scoreboard.
游泳比赛要求有先进的计时设备，确保运动员排名和比赛成绩能够被精确地记录下来。
Swimming RACES require advanced timing devices to ensure the correct placing is given to the athlete and so that records can be accurately verified.
装置 （RFID）还可以决定游泳比赛的名次和计时。
RFID transponders will also have a role in determining placing and timing in swimming events.
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