在R上定义运算 若不等式 对任意实数 成则（      ）                     

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16190' and id < 1360246 and id<>'1360246' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16190' and id > 1360246 and id<>'1360246' order by id asc limit 5