食指或中指戴指套，涂润滑油，缓缓插入肛 门，把直肠壁向肛门一侧缓慢持续地牵拉（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25668' and id < 2157337 and id<>'2157337' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25668' and id > 2157337 and id<>'2157337' order by id asc limit 5