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Just and strong in the 400-meter circular track starting from the same location contrary to just run

18,962,610,3982010-01-28 18:01:16 +0000 #1
the process (do not use equation)
zxfeng04092010-01-28 18:04:44 +0000 #2
40 Miao had a 4.5 m / s 1 5.5 meters / second 20 seconds is 90 meters and 110 meters this is the 200-meter runway is 400 meters from the overall problem is that you should not bar him as a runway, you will when they are at the starting point a at 400 meters of a point when they go face to face meet in this way can be

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