( )的现象属于感觉适应。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31891' and id < 2549530 and id<>'2549530' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31891' and id > 2549530 and id<>'2549530' order by id asc limit 5