在处方书写中，缩写词“po.”表示

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30296' and id < 2449727 and id<>'2449727' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30296' and id > 2449727 and id<>'2449727' order by id asc limit 5