借助于载体使非脂溶性药物由高浓度区域向低浓度区域转运，不需要能量的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30290' and id < 2449208 and id<>'2449208' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30290' and id > 2449208 and id<>'2449208' order by id asc limit 5