出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第251页（218字）
比喻乘机拿走别人的东西，例他趁着大家不留神的时候，顺手牵羊把桌上的名贵钢笔拿走了。
While people were busy with other matters，he walked off with the valuable fountain pen which had been left lying on the table．