短语词组短语swab down 擦洗buccal swab 一种叫腮抹试;一种称为口腔黏膜测试beam swab 梁式抽油装置Throat swab 咽拭子;喉拭子floor swab 起模用毛笔swab hitch 测锤结leadcheck swab 铅检测笔Slickline Swab 抽吸swab valve 抽汲闸门cotton swab 棉签；棉纱擦帚；药棉拭子；棉纱拖把 返回 swab