产后子宫体恢复到未孕状态的时间为（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25964' and id < 2177768 and id<>'2177768' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25964' and id > 2177768 and id<>'2177768' order by id asc limit 5