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a 2008-04-25 08:09:00.000
b 2008-11-12 00:00:00.000
b 2009-11-17 23:00:00.000
a 2009-05-18 00:00:00.000
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id IP_datetime, T_index, T_chat, T_task, T_KL_room, T_class_room, T_game, T_zsy, T_Course,T_friend
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83 2009-11-16 0 0 0 0 0 0 0 0 0 ......