改变原有的结构以便接纳新的动作、经验资料或知识，叫作

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30326' and id < 2451913 and id<>'2451913' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30326' and id > 2451913 and id<>'2451913' order by id asc limit 5