不需要载体，药物由高浓度一侧向低浓度 一侧转运的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30797' and id < 2480266 and id<>'2480266' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30797' and id > 2480266 and id<>'2480266' order by id asc limit 5