holding操: hold; grasp缰: reins; halter; bridle操缰能手: good hands操作弁: cam operated valve糙: 形容词(粗糙; 不细致) rough; coarse; crude 糙纸 rough paper; 这活儿做得太糙。 this is very slipshod work下载手机词典可随时随地查词查翻译